Concentrate
Concentrate verb - To increase the amount of (a substance in a mixture) by removing other substances.
Fill and concentrate are semantically related. In some cases you can use "Fill" instead a verb "Concentrate".
Fill
Fill verb - To put into (something) as much as can be held or contained.
Concentrate and fill are semantically related. Sometimes you can use "Concentrate" instead a verb "Fill".
Common collocations
| air | concentrate air | fill air |
Both words in one sentence
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Malcolm tries to be understanding, but can't quite concentrate... Particularly funny because the last time she appeared, Malcolm's mom confidently predicted she would ''fill out'' in front of Malcolm, his friend, and her parents.
Source: She Is All Grown Up
Cite this Source
Fill and Concentrate. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/concentrate/fill
Concentrate & Fill. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/concentrate/fill>.
Fill or Concentrate. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/concentrate/fill.
Google Ngram Viewer shows how "concentrate" and "fill" have occurred on timeline