gladiolus vs os

gladiolus and os both are nouns.

Word	Noun	Adjective	Verb	Adverb
gladiolus	Yes	No	No	No
os	Yes	No	No	No

As nouns, os is a hypernym of gladiolus; that is, os is a word with a broader meaning than gladiolus:

Other hypernyms of gladiolus include bone.

gladiolus (noun)	os (noun)
the large central part of the breastbone	rigid connective tissue that makes up the skeleton of vertebrates
any of numerous plants of the genus Gladiolus native chiefly to tropical and South Africa having sword-shaped leaves and one-sided spikes of brightly colored funnel-shaped flowers; widely cultivated	a mouth or mouthlike opening