【Casual ↔︎ Formal】

Tell ↔︎ Inform🗣️
Use ↔︎ Utilize📱
Ask ↔︎ Inquire🧐
Help ↔︎ Assist🙋‍♀️
Get ↔︎ Receive🫴
But ↔︎ However🖐️
Need ↔︎ Require🤲
Buy ↔︎ Purchase🛍️
Guess ↔︎ Assume🤔
Check ↔︎ Confirm✅
Finish ↔︎ Conclude🔚
Often ↔︎ Frequently🔁
Start ↔︎ Commence▶️
Show ↔︎ Demonstrate👉