shariah law vs sharia

shariah law and sharia both are nouns.

Word	Noun	Adjective	Verb	Adverb
shariah law	Yes	No	No	No
sharia	Yes	No	No	No

As nouns, shariah law and sharia are synonyms defined as:

shariah law and sharia: the code of law derived from the Koran and from the teachings and example of Mohammed

Other synonyms of shariah law include Islamic law, sharia law, shariah.

shariah law (noun)	sharia (noun)
the code of law derived from the Koran and from the teachings and example of Mohammed	the code of law derived from the Koran and from the teachings and example of Mohammed