Question 1
The suffix -tion appears in common words like celebration.
When the root ends in d or s, the suffix typically becomes -sion,
as in revision. What does this suffix mean?
"-tion" and "-sion" both mark a word as a noun referring
to an act or state. Celebration = the act of celebrating;
revision = the act of revising. The spelling shifts to "-sion"
when the root ends in d or s, but the meaning is identical.