Faster and Flat-out

Faster adverb - More quickly.

Flat-out and faster are semantically related. in speedily topic. In some cases you can use "Flat-out" instead an adverb "Faster".

Flat-out adjective - Having no exceptions or restrictions.

Faster and flat-out are semantically related. Sometimes you can replace term "Faster" with "Flat-out", this terms are similar.