skene arch vs scheme arch

skene arch and scheme arch both are nouns.

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

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

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

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

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