trademark vs Alka-seltzer

trademark and Alka-seltzer both are nouns.

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

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

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