Garden tool?

The actual question was what's the difference between a STRIMMER and a GRASS TRIMMER. NOT a STRING TRIMMER.

There is no difference. A Strimmer is a brand name for a Black and Decker grass trimmer and strictly speaking should never be used to describe a grass trimmer as a Strimmer, unless it is a Black and Decker product

pleasant
March 2009

Wikipedia says...

A string trimmer, also called a line trimmer, Weedeater (a brandname), Weedwhacker(a brandname) or weed wacker, Weed Whip, weedy, whipper snipper, garden strimmer or Trimmer is a powered handheld device that uses a flexible monofilament line instead of a blade for cutting grass and other plants near objects.

Pecavi
March 2009