stiff (esp. BrE), thick
smooth
wallpaper
curry, fish, tomato, etc.

make, make up, mix, mix sth into, mix sth to, mix up
Mix the sugar mixture to a smooth paste.

form
Mix the flour with enough water to form a thick paste.

apply, put on
Apply the wallpaper paste with a roller.

add
Add the tomato paste and cook for a further 25 minutes.

Paste is used with these nouns as the object:
text