munja vs munj

munja and munj both are nouns.

Word	Noun	Adjective	Verb	Adverb
munja	Yes	No	No	No
munj	Yes	No	No	No

As nouns, munja and munj are synonyms defined as:

munja and munj: tough Asiatic grass whose culms are used for ropes and baskets

Other synonyms of munja include Saccharum bengalense, Saccharum munja.

munja (noun)	munj (noun)
tough Asiatic grass whose culms are used for ropes and baskets	tough Asiatic grass whose culms are used for ropes and baskets