Collocations for flour - noun

bread, cake
all-purpose (AmE), baking (AmE), plain (BrE), self-raising (BrE), self-rising (AmE)
strong (BrE)
refined, white, wholemeal (BrE), wholewheat
unbleached
rice, rye, wheat, etc.

bag, cup (AmE), sack

use
add, blend, combine, fold in, mix, mix in, rub sth in, rub sth into, stir, stir in
Blend the flour with a little milk to make a smooth paste.
Rub the butter into the flour.

sieve, sift
Sift the flour and salt into a bowl.

mill