Cycladic civilization vs Cycladic civilisation

Cycladic civilization and Cycladic civilisation both are nouns.

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

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

Cycladic civilization and Cycladic civilisation: the Bronze Age civilization on the Cyclades islands in the southern Aegean Sea that flourished 3000-1100 BC

Other synonyms of Cycladic civilization include Cyclades, Cycladic culture.

Cycladic civilization (noun)	Cycladic civilisation (noun)
the Bronze Age civilization on the Cyclades islands in the southern Aegean Sea that flourished 3000-1100 BC	the Bronze Age civilization on the Cyclades islands in the southern Aegean Sea that flourished 3000-1100 BC