Question about Fluff?

I know in fandom/fanfiction we can be a bit loose when it comes to definitions, but am I using the term 'fluff' wrong?  I usually use it to refer to any non-angsty, heart-warming type fic I write. But there is this new community for Supernatural Fluff (lettherebefluff ) which defines 'fluff' as non-angsty, romance fic. All my fic are gen.