trademark vs Sellotape

trademark and Sellotape both are nouns.

Word	Noun	Adjective	Verb	Adverb
trademark	Yes	No	Yes	No
Sellotape	Yes	No	No	No

trademark (noun)	Sellotape (noun)
a distinctive characteristic or attribute of someone or something	transparent or semitransparent adhesive tape (trade names Scotch tape and Sellotape) used for sealing or attaching or mending
a formally registered symbol identifying the manufacturer or distributor of a product

trademark (verb)	Sellotape (verb)
register the trademark of
mark with a brand or trademark