boneheaded vs wooden-headed

boneheaded and wooden-headed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
boneheaded	No	Yes	No	No
wooden-headed	No	Yes	No	No

As adjectives, boneheaded and wooden-headed are synonyms defined as:

Other synonyms of boneheaded include blockheaded, duncical, duncish, fatheaded, loggerheaded, thick-skulled, thick, thickheaded.

boneheaded (adjective)	wooden-headed (adjective)
(used informally) stupid	(used informally) stupid