institution vs religion

institution and religion both are nouns.

Word	Noun	Adjective	Verb	Adverb
institution	Yes	No	No	No
religion	Yes	No	No	No

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

institution (noun)	religion (noun)
the act of starting something for the first time; introducing something new	a strong belief in a supernatural power or powers that control human destiny
an establishment consisting of a building or complex of buildings where an organization for the promotion of some cause is situated	an institution to express belief in a divine power
a hospital for mentally incompetent or unbalanced person
a custom that for a long time has been an important feature of some group or society
an organization founded and united for a specific purpose