estrangement vs alienation

estrangement and alienation both are nouns.

Word	Noun	Adjective	Verb	Adverb
estrangement	Yes	No	No	No
alienation	Yes	No	No	No

As nouns, estrangement and alienation are synonyms defined as:

estrangement and alienation: the feeling of being alienated from other people

Other synonyms of estrangement include disaffection.

As nouns, estrangement and alienation are synonyms defined as:

estrangement (noun)	alienation (noun)
the feeling of being alienated from other people	the action of alienating; the action of causing to become unfriendly
separation resulting from hostility	(law) the voluntary and absolute transfer of title and possession of real property from one person to another
	the feeling of being alienated from other people
	separation resulting from hostility