stream vs be adrift

stream is a noun but be adrift is not a noun.

Word	Noun	Adjective	Verb	Adverb
stream	Yes	No	Yes	No
be adrift	No	No	Yes	No

As verbs, be adrift is a hypernym of stream; that is, be adrift is a word with a broader meaning than stream:

Other hypernyms of stream include blow, drift, float.

stream (noun)	be adrift (noun)
the act of flowing or streaming; continuous progression
a steady flow of a fluid (usually from natural causes)
dominant course (suggestive of running water) of successive events or ideas
a natural body of running water flowing on or under the earth
something that resembles a flowing stream in moving continuously

stream (verb)	be adrift (verb)
exude profusely	be in motion due to some air or water current
flow freely and abundantly
to extend, wave or float outward, as if in the wind
move in large numbers
rain heavily