thickened vs calloused

thickened and calloused both are adjectives.

Word	Noun	Adjective	Verb	Adverb
thickened	No	Yes	No	No
calloused	No	Yes	No	No

As adjectives, thickened and calloused are synonyms defined as:

thickened and calloused: having calluses; having skin made tough and thick through wear

Other synonyms of thickened include callous.

thickened (adjective)	calloused (adjective)
made or having become thick	having calluses; having skin made tough and thick through wear
made thick in consistency
having calluses; having skin made tough and thick through wear