hardheaded vs pragmatic

hardheaded is not a noun while pragmatic is a noun.

Word	Noun	Adjective	Verb	Adverb
hardheaded	No	Yes	No	No
pragmatic	Yes	Yes	No	No

As adjectives, hardheaded and pragmatic are synonyms defined as:

hardheaded and pragmatic: guided by practical experience and observation rather than theory

Other synonyms of hardheaded include hard-nosed, practical.

hardheaded (noun)	pragmatic (noun)
	an imperial decree that becomes part of the fundamental law of the land

hardheaded (adjective)	pragmatic (adjective)
guided by practical experience and observation rather than theory	of or concerning the theory of pragmatism
unreasonably rigid in the face of argument or entreaty or attack	concerned with practical matters
	guided by practical experience and observation rather than theory