Non native english usually just has a few weird word choices as opposed to a really formal and replacing common words with much less common ones that mean rough

Non native english usually just has a few weird word choices as opposed to a really formal and replacing common words with much less common ones that mean roughly the same thing. I'm talking about comments that my younger self would have written when I thought I would add weight to my argument by trying to sound smarter (so I'd be a hypocrite to judge comments harshly anyway).