Component
Part of speech: noun
Definition: A smaller, self-contained part of a larger entity. Often refers to a manufactured object that is part of a larger device.
Part of speech: adjective
Definition: Making up a larger whole; as a component word. Made up of smaller complete units in combination; as a component stereo.
Example sentence: The ability to be in the present moment is a major component of mental wellness.
Constituent
Part of speech: adjective
Definition: being a part, or component of a wholeauthorized to make a constitution
Part of speech: noun
Definition: a part, or component of a wholea resident of a place represented by an elected officiala functional element of a phrase or clause