Alka-seltzer vs trademark

Alka-seltzer and trademark both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alka-seltzer	Yes	No	No	No
trademark	Yes	No	Yes	No

Alka-seltzer (noun)	trademark (noun)
a commercial antacid that contains aspirin; tablets dissolve in water to give an effervescent solution	a distinctive characteristic or attribute of someone or something
	a formally registered symbol identifying the manufacturer or distributor of a product

Alka-seltzer (verb)	trademark (verb)
	register the trademark of
	mark with a brand or trademark