fosterage vs rearing

fosterage and rearing both are nouns.

Word	Noun	Adjective	Verb	Adverb
fosterage	Yes	No	No	No
rearing	Yes	Yes	No	No

As nouns, fosterage and rearing are synonyms defined as:

fosterage and rearing: helping someone grow up to be an accepted member of the community

Other synonyms of fosterage include breeding, bringing up, fostering, nurture, raising, upbringing.

fosterage (noun)	rearing (noun)
helping someone grow up to be an accepted member of the community	helping someone grow up to be an accepted member of the community
encouragement; aiding the development of something	the properties acquired as a consequence of the way you were treated as a child

fosterage (adjective)	rearing (adjective)
	rearing on left hind leg with forelegs elevated and head usually in profile