hessian vs Wellington boot

hessian and Wellington boot both are nouns.

Word	Noun	Adjective	Verb	Adverb
hessian	Yes	No	No	No
Wellington boot	Yes	No	No	No

As nouns, hessian and Wellington boot are synonyms defined as:

Other synonyms of hessian include Hessian boot, jackboot, Wellington.

hessian (noun)	Wellington boot (noun)
(19th century) a man's high tasseled boot	(19th century) a man's high tasseled boot