tampon vs Tampax

tampon and Tampax both are nouns.

Word	Noun	Adjective	Verb	Adverb
tampon	Yes	No	Yes	No
Tampax	Yes	No	No	No

As nouns, Tampax is a hyponym of tampon; that is, Tampax is a word with a more specific, narrower meaning than tampon:

tampon: plug of cotton or other absorbent material; inserted into wound or body cavity to absorb exuded fluids (especially blood)
Tampax: tampon used to absorb menstrual flow

tampon (noun)	Tampax (noun)
plug of cotton or other absorbent material; inserted into wound or body cavity to absorb exuded fluids (especially blood)	tampon used to absorb menstrual flow

tampon (verb)	Tampax (verb)
plug with a tampon