fosterage vs socialisation

fosterage and socialisation both are nouns.

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

As nouns, socialisation is a hypernym of fosterage; that is, socialisation is a word with a broader meaning than fosterage:

fosterage: helping someone grow up to be an accepted member of the community
socialisation: the adoption of the behavior patterns of the surrounding culture

Other hypernyms of fosterage include acculturation, enculturation, socialization.

fosterage (noun)	socialisation (noun)
helping someone grow up to be an accepted member of the community	the adoption of the behavior patterns of the surrounding culture
encouragement; aiding the development of something	the act of meeting for social purposes
	the action of establishing on a socialist basis