Is this the DM?? I'm not super good with Wattpad, so I'm just going to go ahead here if that's alright!! But basically, G/T is the general term for the size difference trope!! It can be platonic or romantic, but it’s just a relationship between a big and a little character. I personally love it as it can either be really cool, like Godzilla esc stuff, or super cute and fluffy like Iron Giant or smth!!
Is that alright?? I can go into more depth onto what I want specifically!! Or I can provide you with some good places to explore it yourself!! (Unfortunately I wouldn't recommend just looking it up because there is a small but very loud group of folks who are very gross about the group, as there are with any group of people)