cultural vs ethnical

cultural and ethnical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
cultural	No	Yes	No	No
ethnical	No	Yes	No	No

As adjectives, cultural and ethnical are synonyms defined as:

cultural and ethnical: denoting or deriving from or distinctive of the ways of living built up by a group of people

Other synonyms of cultural include ethnic.

cultural (adjective)	ethnical (adjective)
of or relating to the shared knowledge and values of a society	denoting or deriving from or distinctive of the ways of living built up by a group of people
of or relating to the arts and manners that a group favors
relating to the raising of plants or animals
denoting or deriving from or distinctive of the ways of living built up by a group of people