arched vs bowed

arched and bowed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
arched	No	Yes	No	No
bowed	No	Yes	No	No

As adjectives, arched and bowed are synonyms defined as:

Other synonyms of arched include arced, arching, arciform, arcuate.

arched (adjective)	bowed (adjective)
constructed with or in the form of an arch or arches	of a stringed instrument; sounded by stroking with a bow
forming or resembling an arch	forming or resembling an arch
	have legs that curve outward at the knees
	showing an excessively deferential manner