mujahideen vs mujahidin

mujahideen and mujahidin both are nouns.

Word	Noun	Adjective	Verb	Adverb
mujahideen	Yes	No	No	No
mujahidin	Yes	No	No	No

As nouns, mujahideen and mujahidin are synonyms defined as:

mujahideen and mujahidin: a military force of Muslim guerilla warriors engaged in a jihad

Other synonyms of mujahideen include mujahadeen, mujahadein, mujahadin, mujahedeen, mujahedin.

mujahideen (noun)	mujahidin (noun)
a military force of Muslim guerilla warriors engaged in a jihad	a military force of Muslim guerilla warriors engaged in a jihad