zooid vs organism

zooid and organism both are nouns.

Word	Noun	Adjective	Verb	Adverb
zooid	Yes	No	No	No
organism	Yes	No	No	No

As nouns, organism is a hypernym of zooid; that is, organism is a word with a broader meaning than zooid:

zooid: one of the distinct individuals forming a colonial animal such as a bryozoan or hydrozoan
organism: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of zooid include being.

zooid (noun)	organism (noun)
one of the distinct individuals forming a colonial animal such as a bryozoan or hydrozoan	a living thing that has (or can develop) the ability to act or function independently
	a system considered analogous in structure or function to a living body