Trading vs just converting between coins using the convert function

I am investing within the smaller coins which are anticipated to go huge sooner or later, or fairly soon.

Once I first bought $shib, - I deposited 6 USDT in my account, and since it was lower than 10, I needed to get the Shib by converting the USDT to Shib through the use of the convert perform in binance, and received myself some Shib! later, I also bought extra coins using the same technique.

But then I noticed more individuals speaking about buying and selling, and I nonetheless don't perceive the distinction between buying and selling and just using the convert perform quick and straightforward. I want the converting anyway since I gained't should cope with a third get together.

My concern is that, if the coins I purchased go up in worth in the future, and I needed to transform them back to USDT in their new worth, in order that I can withdraw them later a while, wouldn't it still be good to use the convert perform for that? If not, then why?