murder suspect vs suspect

murder suspect and suspect both are nouns.

Word	Noun	Adjective	Verb	Adverb
murder suspect	Yes	No	No	No
suspect	Yes	Yes	Yes	No

As nouns, suspect is a hypernym of murder suspect; that is, suspect is a word with a broader meaning than murder suspect:

murder suspect (noun)	suspect (noun)
someone suspected of committing murder	someone who is under suspicion
	a person or institution against whom an action is brought in a court of law; the person being sued or accused

murder suspect (adjective)	suspect (adjective)
	not as expected

murder suspect (verb)	suspect (verb)
	regard as untrustworthy; regard with suspicion; have no faith or confidence in
	imagine to be the case or true or probable
	hold in suspicion; believe to be guilty