Collocations for leaflet - noun

free
a free leaflet explaining your tax return

helpful
explanatory (BrE), information, instruction
promotional, publicity
campaign, election, party (BrE)

copy

issue, produce, publish
The Health Zone issued hundreds of leaflets.

deliver, distribute, drop, give out, hand out, pass out, send out
Campaigners handed out leaflets to passers by.

advertise sth, explain sth

in a/the leaflet
Details are given in our promotional leaflet.