When two expressions seem possible, intuition may not tell you which fits a particular audience or situation. A corpus—a searchable collection of texts or speech transcripts—can help you look at how forms appear in context. It does not hand down a verdict. Your task is to ask a focused question, inspect the examples and decide how far the evidence applies.
Start with a choice you can actually compare
Write down the alternatives and your sentence. Ask a bounded question: do writers more often say “strong argument” or “powerful argument” in academic prose? Does “look forward to” appear before a noun phrase or an -ing verb?
A form may be frequent but unsuitable for your context; two forms may be grammatical yet differ in tone. Decide whether you are investigating frequency, grammar, register, regional preference, or meaning before interpreting results.
Search for a pattern, not just a word
A concordance displays matching examples with the search item in its surrounding context. This is often called a KWIC view, short for “key word in context.” In a corpus tool, search a word or phrase, then sort or filter the lines to make recurring neighbors and structures easier to see. Sketch Engine’s guide describes concordances as contextualized results that can be sorted, filtered, counted and viewed with text-type metadata [1].
For the choice between “strong argument” and “powerful argument,” a search for each complete phrase gives you a useful first comparison. A search for “argument” alone can reveal nearby adjectives, but you must inspect each line: some matches may concern a person arguing, a legal argument, or another sense. If your tool supports it, compare the same genres and time span for both phrases. A difference in results is more meaningful when the search conditions match.
Read the lines before counting them
Look across multiple results. Ask what surrounds the phrase, what the sentence is doing, and what kind of text it comes from. A few striking examples do not establish a general pattern. Open more context when a short line leaves the meaning unclear.
A hundred search hits are not necessarily a hundred independent speakers or writers; many may come from a few publications or repeated quotations. Metadata can help, but only as far as the corpus design and recorded information allow. “These examples in this corpus suggest…” is safer than “English speakers always…”
Check what the corpus contains
Every corpus has a boundary. The British National Corpus XML Edition is a 100-million-word sample of written and spoken British English from the late twentieth century; its Oxford documentation describes a range of source types and explains its sampling approach [2]. That makes it useful for some questions about British English in that period, but not a current survey of every British speaker or every online setting.
Other collections differ. Lancaster describes BNC2014 as 100 million words of present-day British English, with access to written and spoken material [3]. COCA documents American English from 1990–2019 across genres including speech, fiction, news, academic writing, web and blogs [4]. Check a corpus’s variety, dates and genres before applying its results to your question.
A worked example: “strong” or “powerful” argument?
Suppose you are editing an academic paragraph and cannot decide between “a strong argument” and “a powerful argument.” First choose a corpus with academic material and search both exact phrases. Record the corpus, date range, genre filter and counts shown by the interface. Then examine a set of concordance lines for each phrase. Note whether “argument” means a reasoned case, a disagreement, or something else; look at the surrounding verbs and nouns; and check whether the phrase is part of a quotation or title.
If one phrase appears more often, that is a clue about frequency in this collection, not proof that the other is wrong. Read full examples and decide which emphasis fits: “strong” may foreground sound reasoning, while “powerful” may foreground persuasive force. Treat that distinction as an interpretation to test, not a rule established by a count. If examples do not clarify it, seek another source.
Turn a pattern into a careful decision
Use corpus evidence to narrow options, then apply it to your sentence. Check a dictionary for meaning, grammar and register; consult a style guide for institutional writing; and ask a knowledgeable speaker about community-specific nuance. These sources answer different questions.
Keep a compact note: the question, corpus and filters, a few representative examples, and the limit of what you can infer. For instance: “In the academic subset I checked, both phrases occur; I chose ‘strong argument’ because I mean that its reasoning holds up.” A note like this preserves your reasoning without converting one search into an all-purpose language rule.
A short practice routine
Choose a pair from something you are reading—perhaps “make a decision” and “take a decision.” Predict where each form might appear, search under matching conditions, examine several lines, and note source types and dates. Then write a sentence for your audience and compare it with the examples.
State what the search showed and what it could not: a frequent pairing, a genre difference, or several possible constructions. If your question depends on a region, profession, period or relationship the corpus does not represent, record that gap. The result is a better-supported choice for this task, not a universal verdict.
