philatelic vs philatelical

philatelic and philatelical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
philatelic	No	Yes	No	No
philatelical	No	Yes	No	No

As adjectives, philatelic and philatelical are synonyms defined as:

philatelic and philatelical: of or relating to philately or of interest to philatelists

philatelic (adjective)	philatelical (adjective)
of or relating to philately or of interest to philatelists	of or relating to philately or of interest to philatelists