subtropic vs subtropical

subtropic and subtropical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
subtropic	No	Yes	No	No
subtropical	No	Yes	No	No

As adjectives, subtropic and subtropical are synonyms defined as:

subtropic and subtropical: of or relating to or characteristic of conditions in the subtropics

Other synonyms of subtropic include semitropic, semitropical.

subtropic (adjective)	subtropical (adjective)
of or relating to or characteristic of conditions in the subtropics	of or relating to or characteristic of conditions in the subtropics