Can you ask for napkins in a coffee shop? Yes, you certainly can. That's the right word to use. Napkins, also sometimes known as serviettes, are used for wiping your hands, mouth etc at mealtimes. Washable napkins are made of cloth, such as linen; disposable napkins are made of paper. The difference between a napkin and a tissue? While paper napkins are a food-related product, paper tissues are a personal/health/hygiene product. You use tissues to wipe tears from your eyes, wipe your nose if it runs and to catch sneezes. Tissues are generally softer than napkins. I hope that helps.

You can use them interchangeably here. A napkin is a table accessory, such as one would put in ones lap to protect clothes. Traditionally made of cloth, now often paper and frequently misused. A term sometimes used is "paper napkins". A tissue is a piece of paper designed to be absorbent for any possible purpose, such as fixing a nose that is running or dabbing up spilt tea. . When your intention is as clear as this, they can be interchanged.

Yes, you can. Napkins are sturdier and used to clean your mouth or fingers, tissues are softer and used to blow your nose. (napkins could be made of fabric and in that case you could call them "serviettes")