diminished arch vs skene arch

diminished arch and skene arch both are nouns.

Word	Noun	Adjective	Verb	Adverb
diminished arch	Yes	No	No	No
skene arch	Yes	No	No	No

As nouns, diminished arch and skene arch are synonyms defined as:

diminished arch and skene arch: an arch whose height is less than half its width

Other synonyms of diminished arch include scheme arch, skeen arch.

diminished arch (noun)	skene arch (noun)
an arch whose height is less than half its width	an arch whose height is less than half its width