ADJ

emergency
humanitarian
cash, development, economic, financial, food, legal, medical, military, relief
Legal aid (= government money for legal advice) is a fundamental part of our system of justice
federal, government, state
bilateral, external, foreign, international, overseas
The country relies on foreign aid

VERB + AID

appeal for, call for
The country's president has appealed for international aid in the wake of the disaster
extend, give (sb), grant (sb), provide (sb with), send (sb)
get, receive
depend on, rely on
promise
cut (off), suspend, withdraw, withhold
The British government has now suspended humanitarian aid to the area

AID + NOUN

agency, worker
budget, package, programme
a $14 million aid package

VERB + AID

ask for, enlist
We enlisted the aid of John and his family
come/go to sb's (= to help someone)
She screamed loudly and two people came to her aid

PREP

in ~ of
collecting money in aid of charity
with/without the ~ of
She is now able to walk with the aid of a stick

ADJ

effective, essential, excellent, important, useful, valuable
classroom, teaching, training
audio-visual, computer, visual
hearing, walking
memory
buoyancy

PREP

~ to
essential aids to learning