line organization vs line organisation

line organization and line organisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
line organization	Yes	No	No	No
line organisation	Yes	No	No	No

As nouns, line organization and line organisation are synonyms defined as:

line organization and line organisation: the organizational structure of activities contributing directly to the organization's output

line organization (noun)	line organisation (noun)
the organizational structure of activities contributing directly to the organization's output	the organizational structure of activities contributing directly to the organization's output