stamp; rubber stamp; postage stamp
Refers to physical stamps: rubber stamps, postage stamps, or stamp marks. In Japanese, 切手 is more common for postage stamps, while スタンプ often refers to rubber stamps or point-card stamps.
I had my passport stamped.
At this shop, when you collect 10 stamps on your loyalty card, you get a discount.
sticker; large emoji; digital sticker
Used in messaging apps like LINE for large, often illustrated stickers sent as reactions or expressions. Distinct from small text emoji.
I sent a funny sticker to my friend.
LINE stickers are handy for conveying feelings.
I had an entry stamp pressed into my passport.
I sent my friend a cute sticker.
If you collect ten stamps, you get a free coffee.
commemorative stamp; cachet