Are compression, compact, and zip all the same thing?

Question

I'm trying to follow some instructions but the words confuse.

Answer 1

Zip is a particluar format. Zip is compression or compacting, but not all compression and compacting is Zip.

RAR is another type of compression or compacting.

It is like a sandwich bag. A ziploc bag is a sandwich bag, but not all sandwich bags are ziploc bags.

Answer 2

-compression - making the file smaller

-compact - a file that has been made small

-zip - the most common way to compress a file

other formats rar, 7-zip, ect