calf vs sura

calf and sura both are nouns.

Word	Noun	Adjective	Verb	Adverb
calf	Yes	No	No	No
sura	Yes	No	No	No

As nouns, calf and sura are synonyms defined as:

calf (noun)	sura (noun)
young of domestic cattle	the muscular back part of the shank
young of various large placental mammals e.g. whale or giraffe or elephant or buffalo	one of the sections (or chapters) in the Koran
the muscular back part of the shank
fine leather from the skin of a calf