agreement vs community

agreement and community both are nouns.

Word	Noun	Adjective	Verb	Adverb
agreement	Yes	No	No	No
community	Yes	No	No	No

As nouns, community is a hyponym of agreement; that is, community is a word with a more specific, narrower meaning than agreement:

agreement (noun)	community (noun)
compatibility of observations	a group of people living in a particular local area
the thing arranged or agreed to	(ecology) a group of interdependent organisms inhabiting the same region and interacting with each other
the verbal act of agreeing	a group of people having a religion, ethnic, profession, or other particular characteristic in common
the statement (oral or written) of an exchange of promises	a group of nations having common interests
the determination of grammatical inflection on the basis of word relations	a district where people live; occupied primarily by private residences
harmony of people's opinions or actions or characters	common ownership
	agreement as to goals