alienate vs drift apart

alienate and drift apart both are verbs.

Word	Noun	Adjective	Verb	Adverb
alienate	No	No	Yes	No
drift apart	No	No	Yes	No

As verbs, drift apart is a hyponym of alienate; that is, drift apart is a word with a more specific, narrower meaning than alienate:

alienate: arouse hostility or indifference in where there had formerly been love, affection, or friendliness
drift apart: lose personal contact over time

Other hyponyms of alienate include drift away, wean.

alienate (verb)	drift apart (verb)
arouse hostility or indifference in where there had formerly been love, affection, or friendliness	lose personal contact over time
make withdrawn or isolated or emotionally dissociated
transfer property or ownership