There is no Sin for missing your Friday prayer, but reconsile and ask for forgivess.

Friday prayer consists of a sermon first, followed by a prayer. Both are obligatory.
Eid prayer consists of a prayer first, followed by a sermon. Both are recommended, but not obligatory.

Jumaa is an Arabic word that means in English Friday.

Jumaa is the traditional Islamic Friday Prayer which replaces the noon prayer on Friday.

Refer to question below for more information.

Friday prayer is compulsory prayer to be performed at the regular noon prayer and replacing it. It is performed weekly.

Eid prayer is Sunnah (not compulsory) to be perfomed after sunrise. It is perfomed twice a year (Eid Al-Fitr and Eid-Aldha)