What is the difference between ID-1 sim & Plug-in Sim cards?

Question

Firstly, please forgive me if this is not the right place to this question. I was confused and couldn't understand where to ask this question.

I want to know in simple terms, what are difference between ID-1 sim cards and Plug in sim cards.

I found the gsm standard documentation from here. Please tell me the difference between ID-1 sim & Plugin sims

Answer 1

ID-1 has the size of a credit card. "Plug in" is the same as the Mini-SIM card, roughly 25 mm × 15 mm in size.

You'll find the definition in Annex A of the PDF you've linked btw.