Husayn vs Husain

Husayn and Husain both are nouns.

Word	Noun	Adjective	Verb	Adverb
Husayn	Yes	No	No	No
Husain	Yes	No	No	No

As nouns, Husayn and Husain are synonyms defined as:

Husayn and Husain: king of Jordan credited with creating stability at home and seeking peace with Israel (1935-1999)

Other synonyms of Husayn include Hussein, Hussein of Jordan, ibn Talal Hussein, King Hussein.

As nouns, Husayn and Husain are synonyms defined as:

Husayn and Husain: Iraqi leader who waged war against Iran; his invasion of Kuwait led to the Gulf War (born in 1937)

Other synonyms of Husayn include Hussein, Saddam, Saddam bin Hussein at-Takriti, Saddam Hussein.

Husayn (noun)	Husain (noun)
king of Jordan credited with creating stability at home and seeking peace with Israel (1935-1999)	king of Jordan credited with creating stability at home and seeking peace with Israel (1935-1999)
Iraqi leader who waged war against Iran; his invasion of Kuwait led to the Gulf War (born in 1937)	Iraqi leader who waged war against Iran; his invasion of Kuwait led to the Gulf War (born in 1937)