What I am saying is that I have seen the term "knitwear" everywhere, and when I am looking for "knitwear", I am not looking for t-shirts or "jerseys", but those sweatshirts that look like this (or the like): https://cdn.shopify.com/s/files/1/1181/5370/files/knits_1_48....
it’s is both slang for sports uniform (usually shirt) and also is a type of fabric material super common in clothing [0]
[0] https://fabricwholesaledirect.com/collections/jersey-knit-fa...