origami –n. the Japanese art of folding paper into shapes that look like birds, animals and other things

tip –n. a piece of advice or useful information

audio –adj. of or relating to the sound that is heard on a recording or broadcast

fold –v. to bend one part of something over or against another part

fitted sheet –n. a piece of bedding cloth that has four corners, and sometimes two or four sides, fitted with elastic

introduce –v. to mention or refer to something for the first time