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TOEIC Link Part 5: populace versus populous

Populace and populous look almost identical but differ by part of speech: populace is a noun meaning the general population, while populous is an adjective meaning heavily populated. Part 5 uses the pair to test whether you read the grammar slot rather than the shape of the word.

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TOEIC Link Part 5: populace versus populous

Populace and populous differ by only one letter, but that letter changes the part of speech — and that is exactly what Part 5 is testing. Populace is a noun meaning the general public, the ordinary people of a place. Populous is an adjective meaning having a large population, densely inhabited. Because they look almost the same, the exam counts on you to read the grammar slot rather than the spelling. For the wider set of these traps, start with the commonly confused word pairs master index.

The core rule: noun versus adjective

  • populace (noun) = the general population, the common people. The new policy was welcomed by the wider populace. / Local officials surveyed the populace before the redevelopment.
  • populous (adjective) = densely populated, having many inhabitants. The company opened its flagship store in the country's most populous city. / The region is far more populous than its neighbors.

The unlocking test is grammar, not meaning. Ask what job the blank does in the sentence. If it names a group of people and behaves like a noun (it can follow the and take a verb), you need populace. If it describes a noun and could sit before a word like city or region, you need populous.

Why Part 5 likes this pair

Because the two words are nearly identical on the page, the sentence's structure is the only reliable clue.

The candidate's message resonated with the general __.

After the general, the blank is the head noun — a group of people — so the answer is populace.

The firm concentrated its expansion on the most __ metropolitan areas.

Here the blank modifies metropolitan areas and sits in a superlative adjective slot (the most ... areas), so the answer is populous.

Spotting the clue

Look at what surrounds the blank:

  • A determiner like the in front and a noun's job (subject or object, often the thing that was affected or responded) → choose populace (the local populace, inform the populace).
  • A noun right after the blank, or an adjective marker like most / more / very before it → choose populous (a populous nation, the most populous state).

A quick swap test confirms it: if you could replace the word with the public or the people, you want the noun populace; if you could replace it with crowded or densely inhabited, you want the adjective populous. For more pairs decided by part of speech rather than meaning, see the adjective and adverb confusable pairs study guide.

Quick self-check

  1. The reforms were designed to benefit the entire __. (populace — noun, follows the entire)
  2. Tokyo is one of the world's most __ urban centers. (populous — adjective, before a noun)
  3. Broadcasters aimed the campaign at a broad __. (populace — noun, object of aimed at)

Takeaway

If the blank names a group of people and works as a noun, you need populace. If it describes a place as heavily populated, you need the adjective populous. Read the grammar slot, not the spelling, and two look-alikes stop competing. To see how this pair fits the wider set of Part 5 traps, return to the commonly confused word pairs master index.