mujahidin vs mujahideen

mujahidin and mujahideen both are nouns.

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

As nouns, mujahidin and mujahideen are synonyms defined as:

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

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

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