teetotum vs humming top

teetotum and humming top both are nouns.

Word	Noun	Adjective	Verb	Adverb
teetotum	Yes	No	No	No
humming top	Yes	No	No	No

As nouns, humming top is a hyponym of teetotum; that is, humming top is a word with a more specific, narrower meaning than teetotum:

teetotum: a conical child's plaything tapering to a steel point on which it can be made to spin
humming top: a top that makes a humming noise as it spins

Other hyponyms of teetotum include peg top, whip top, whipping top.

teetotum (noun)	humming top (noun)
a conical child's plaything tapering to a steel point on which it can be made to spin	a top that makes a humming noise as it spins