Act
Act verb - To have a certain purpose.
Usage example: the tail feathers of woodpeckers act as props while the birds excavate tree trunks for insects
Function is a synonym for act in do something topic. In some cases you can use "Function" instead the word "Act" as a verb or a noun, when it comes to topics like work, action, direct, operate. popular alternative
Function
Mutual synonyms
How words are described
| old | old act | old function |
| physical | physical act | physical function |
| particular | particular act | particular function |
| similar | similar act | similar function |
| Other adjectives: symbolic, certain, original, single, simple, actual, entire, real, little, main, necessary, new, major, minor. | ||
Common collocations
Both words in one sentence
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Our Zombies Are Different: The zombies in the Season 3 appear, for all intents and purposes, to be act and function perfectly normal even when they themselves are informed that they are zombies until their hunger for flesh takes over.
Source: Series / Misfits -
Spies in a Van: Scorpion only occasionally act as spies, but they do have a nice van equipped to support them in that function as well as others.
Source: Series / Scorpion - Freeza. While he's able to hide beneath a polite and suave act and function well enough to run a business, beneath it all, he's a brutally sadistic, Ax-Crazy psychopath who will kill anyone, even his own minions, For the Evulz, and the mask falls off completely when Goku defeats him.
Source: Mask of Sanity
Cite this Source
Function and Act. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/act/function
Act & Function. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/act/function>.
Function or Act. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/act/function.
Google Ngram Viewer shows how "act" and "function" have occurred on timeline