Verbose (adjective) لفاظی، طول کلامی
using or expressed in more words than are needed.
Example: “much academic language is obscure and verbose”
Jargon (noun) زبان، بولی جو سمجھ نہ آئے
special words or expressions used by a profession or group that are difficult for others to understand.
Example: “legal jargon”
