rhomb vs rhombus

rhomb and rhombus both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhomb	Yes	No	No	No
rhombus	Yes	No	No	No

As nouns, rhomb and rhombus are synonyms defined as:

rhomb and rhombus: a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

Other synonyms of rhomb include diamond.

rhomb (noun)	rhombus (noun)
a parallelogram with four equal sides; an oblique-angled equilateral parallelogram	a parallelogram with four equal sides; an oblique-angled equilateral parallelogram