backhand vs written

backhand is a noun but written is not a noun.

Word	Noun	Adjective	Verb	Adverb
backhand	Yes	Yes	Yes	No
written	No	Yes	No	No

backhand (noun)	written (noun)
a return made with the back of the hand facing the direction of the stroke

backhand (adjective)	written (adjective)
(of racket strokes) made across the body with back of hand facing direction of stroke	set down in writing in any of various ways
(of handwriting) having the letters slanting backward	systematically collected and written down
	written as for a film or play or broadcast

backhand (verb)	written (verb)
hit a tennis ball backhand