What is Paste ?
Paste is (noun) 1. a thin liquid glue Spread the paste evenly over the back of the wallpaper. 2. soft food The cake is covered with almond paste. Mix the flour, eggs and milk to a smooth paste. Add tomato paste to the soup. 3. a hard shining glass, used to make imitation jewellery Those aren’t real diamonds, they’re just paste. (verb) to glue something such as paper She pasted a sheet of coloured paper over the front of the box. He pasted the newspaper cuttings into his scrapbook. cut
source: Easier English, Student Dictionary Upper Intermediate Level