meerschaum vs pipe

meerschaum and pipe both are nouns.

Word	Noun	Adjective	Verb	Adverb
meerschaum	Yes	No	No	No
pipe	Yes	No	Yes	No

As nouns, pipe is a hypernym of meerschaum; that is, pipe is a word with a broader meaning than meerschaum:

Other hypernyms of meerschaum include tobacco pipe.

meerschaum (noun)	pipe (noun)
a pipe having a bowl made of meerschaum	a long tube made of metal or plastic that is used to carry water or oil or gas etc.
a white clayey mineral	a tube with a small bowl at one end; used for smoking tobacco
	the flues and stops on a pipe organ
	a tubular wind instrument
	a hollow cylindrical shape