used to form nouns relating to the action of specified verbs; -ation; -tion
köken: Learned borrowing from Latin -tiōnem, as a learned form. The original inherited form of the suffix, -zone and -zzone or in some cases -gione, is today less common but found in words such as ragione, stagione, cagione, canzone, punzone, acquazzone, tizzone, etc.
köken: Etymology tree Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiōlbor. Polish -cja Learned borrowing from Latin -tiō.
roughly equivalent to -tion; was used to form a noun when added to a verb root, describing that action or state related to the verb (also used with adjective roots sometimes)
köken: Inherited from Latin -tiō, -tiōnem, and found in terms inherited from Latin as well those formed before the mid 19th century, but is otherwise no longer productive. Most modern words or neologisms use the borrowed doublets -ție or occasionally -țiune.