I grew up in California near the bay area calling them weed whackers.

Same.

Up in Canada, I’ve only ever heard weed whacker

Weed whacker, unless I need parts or a new one, then it’s a string trimmer until I need to whack more weeds

Weed whackers and weed eaters were used fairly interchangeably where I grew up in the US southwest and mountain west.

I’m in a Great Lake State and we call it a “weed whacker”. Really sent the “wh” sound like Hank Hill for comic effect.

I feel like weed Wacker/Eater are brands like Kleenex. In my head it is a string trimmer.

I usually say “I’m going to trim the yard”.

ye olde whippersnapper

This plays in my head every time I hear the phrase “weed whacker”. It’s called a whacker, for weeds.

https://www.youtube.com/watch?v=qMghq58gvFo&t=106

Weed eater

Weedeaters, as I believe that was the trade name of the first ones

decespugliatore (debusher) or tosaerba (grass shearing)

Ours are mostly electric now and thus not annoying

Northeast US - weed whacker

Southern US. Weed whacker.

New brunswick (canadian province near maine) here, it’s also called a weed whacker (and sometimes weed eater)