lie vs lie awake

lie is a noun but lie awake is not a noun.

Word	Noun	Adjective	Verb	Adverb
lie	Yes	No	Yes	No
lie awake	No	No	Yes	No

As verbs, lie awake is a hyponym of lie; that is, lie awake is a word with a more specific, narrower meaning than lie:

Other hyponyms of lie include sun, sunbathe, sprawl, recline, recumb, repose, overlie, repose, bask.

lie (noun)	lie awake (noun)
a statement that deviates from or perverts the truth
position or manner in which something is situated

lie (verb)	lie awake (verb)
tell an untruth; pretend with intent to deceive	lie without sleeping
be lying, be prostrate; be in a horizontal position
assume a reclining position
be located or situated somewhere; occupy a certain position
originate (in)
have a place in relation to something else
be and remain in a particular state or condition