The thing is, they don't appear red in my Grammarly when I tried to post both words it seems like both of them are correct until you elaborate to us the difference between these two. I understand it well when you say about the difference between the two words you mentioned. It usually means quantity when you are posting on the Altcoin section but in this section upper case should be used at some point. Thanks for clarifying it to us, this seems to be a small thing but it's a piece of good information you got here.