recipient vs mandatory

recipient and mandatory both are nouns.

Word	Noun	Adjective	Verb	Adverb
recipient	Yes	No	No	No
mandatory	Yes	Yes	No	No

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

recipient (noun)	mandatory (noun)
the semantic role of the animate entity that is passively involved in the happening denoted by the verb in the clause	a territory surrendered by Turkey or Germany after World War I and put under the tutelage of some other European power until they are able to stand by themselves
a person who receives something	the recipient of a mandate

recipient (adjective)	mandatory (adjective)
	required by rule