Difference between the words 'commenter' and 'commentator'?

Question

i would like to know what is the difference between the words 'commenter' and 'commentator' . If you could give some examples that would be great

Answer 1

commenter would be some one making a comment
the commentator is like an announcer on TV sports

Answer 2

Commenter means any person (other than a party) or representative of such person who timely:

(1) Submits in writing to the Regional Hearing Clerk that he is providing or intends to provide comments on the proposed assessment of a penalty pursuant to sections 309(g)(4) and 311(b)(6)(C) of the Clean Water Act or section 1423(c) of the Safe Drinking Water Act, whichever applies, and intends to participate in the proceeding; and

(2) Provides the Regional Hearing Clerk with a return address.

A commentator is an individual who comments on sports, politics, current events, or public issues; synonyms include pundit. Social commentator may cover anything from a preacher to a columnist to a cultural critic.

Answer 3

commenter is not a word