linger vs remain

linger and remain both are verbs.

Word	Noun	Adjective	Verb	Adverb
linger	No	No	Yes	No
remain	No	No	Yes	No

As verbs, remain is a hypernym of linger; that is, remain is a word with a broader meaning than linger:

Other hypernyms of linger include persist, stay, stay put, stick, stick around.

linger (verb)	remain (verb)
take one's time; proceed slowly	stay the same; remain in a certain state
leave slowly and hesitantly	be in a certain place and not leave
be about a place without any apparent purpose	continue in a place, position, or situation
to hang about in a place beyond the proper or usual time	be left; of persons, questions, problems, results, evidence, etc.
remain present although waning or gradually dying