Mycenaean civilisation vs Mycenaean civilization

Mycenaean civilisation and Mycenaean civilization both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mycenaean civilisation	Yes	No	No	No
Mycenaean civilization	Yes	No	No	No

As nouns, Mycenaean civilisation and Mycenaean civilization are synonyms defined as:

Mycenaean civilisation and Mycenaean civilization: the late bronze-age culture of Mycenae that flourished 1400-1100 BC

Other synonyms of Mycenaean civilisation include Mycenaean culture.

Mycenaean civilisation (noun)	Mycenaean civilization (noun)
the late bronze-age culture of Mycenae that flourished 1400-1100 BC	the late bronze-age culture of Mycenae that flourished 1400-1100 BC