gumshoe vs detective

gumshoe and detective both are nouns.

Word	Noun	Adjective	Verb	Adverb
gumshoe	Yes	No	No	No
detective	Yes	No	No	No

As nouns, detective is a hypernym of gumshoe; that is, detective is a word with a broader meaning than gumshoe:

Other hypernyms of gumshoe include investigator, police detective, tec.

gumshoe (noun)	detective (noun)
a waterproof overshoe that protects shoes from water or snow	a police officer who investigates crimes
someone who is a detective	an investigator engaged or employed in obtaining information not easily available to the public