frontal vs frontlet

frontal and frontlet both are nouns.

Word	Noun	Adjective	Verb	Adverb
frontal	Yes	Yes	No	No
frontlet	Yes	No	No	No

As nouns, frontal and frontlet are synonyms defined as:

frontal (noun)	frontlet (noun)
an adornment worn on the forehead	an adornment worn on the forehead
a drapery that covers the front of an altar
the face or front of a building

frontal (adjective)	frontlet (adjective)
of or relating to the front of an advancing mass of air
meeting front to front
belonging to the front part
of or adjacent to the forehead or frontal bone