side drum vs tympan

side drum and tympan both are nouns.

Word	Noun	Adjective	Verb	Adverb
side drum	Yes	No	No	No
tympan	Yes	No	No	No

As nouns, tympan is a hypernym of side drum; that is, tympan is a word with a broader meaning than side drum:

side drum: a small drum with two heads and a snare stretched across the lower head
tympan: a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end

Other hypernyms of side drum include drum, membranophone.

side drum (noun)	tympan (noun)
a small drum with two heads and a snare stretched across the lower head	a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end