There is no biological/scientific definition of a weed. Its the word used to describe 'any' plant found growing in an undesirable place. The word was appropriated and used in the pejorative to denigrate Cannabis. It was then re-appropriated and accepted by our the counter-culture.
Basically, people who don't know shit say 'Skunk' for everything. I get suspect when dealing with those Dudes, to me its how the POEPOE talk. <#spidey sense>
All my pals, know skunk is skunk, AK47 is AK47, PowerPlant is PowerPlant etc etc ..... A deal could go badly wrong with those type of inaccuracies.
edit:
I don't think its just my peeps either, everyone is getting proper clued up to their shit now. Man's are even asking names of breeders. lol