hard-boiled vs pugnacious

hard-boiled and pugnacious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hard-boiled	No	Yes	No	No
pugnacious	No	Yes	No	No

As adjectives, hard-boiled and pugnacious are synonyms defined as:

Other synonyms of hard-boiled include hard-bitten.

hard-boiled (adjective)	pugnacious (adjective)
(eggs) cooked until the yolk is solid	ready and able to resort to force or violence
used of persons; emotionally hardened	tough and callous by virtue of experience
tough and callous by virtue of experience