Function and Instinct

Function

Function noun - A social gathering.

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Instinct and function are semantically related. In some cases you can use "Instinct" instead a noun "Function".

Instinct noun - Inborn pattern of behavior often responsive to specific stimuli.

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Function and instinct are semantically related. Sometimes you can use "Function" instead a noun "Instinct".

physical	physical function	physical instinct
full	full function	full instinct
similar	similar function	similar instinct
natural	natural function	natural instinct
Other adjectives: original, single, simple, little, secret, necessary, protective, biological.

They're also said to be so adorable that it appears to function sort of like Mind Rape for the people around them: Any vampire who sees one is instantly driven to an insane maternal/paternal protection instinct.

Source: And I Must Scream / Literature
As Yen Sid explains in Kingdom Hearts II, this is what separates the Heartless from the Nobodies; while the Heartless are little more than mindless animals who function on instinct, the Nobodies are fully capable of thinking things through and planning ahead.

Source: It Can Think

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Instinct and Function. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/function/instinct

Function & Instinct. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/function/instinct>.

Instinct or Function. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/function/instinct.

Google Ngram Viewer shows how "function" and "instinct" have occurred on timeline