mineral tar vs maltha

mineral tar and maltha both are nouns.

Word	Noun	Adjective	Verb	Adverb
mineral tar	Yes	No	No	No
maltha	Yes	No	No	No

As nouns, mineral tar and maltha are synonyms defined as:

mineral tar and maltha: a thick black tar intermediate between petroleum and asphalt

mineral tar (noun)	maltha (noun)
a thick black tar intermediate between petroleum and asphalt	a thick black tar intermediate between petroleum and asphalt