complete
good, long
brief, little, short
well-deserved, well-earned
much-needed
adequate, proper, sufficient
The body requires a healthy diet and adequate rest.

nice
beauty (AmE)
I need my beauty rest.

bed
She's on complete bed rest, antibiotics and plenty of fluids.
I was hospitalized many times and put on bed rest for six months.

find (formal), get, have, take
Her heart would find no rest until she knew the truth.
Get some rest while you can.
I had a good long rest before the party.

need
deserve
You deserve some rest.

disturb
I apologize for disturbing your rest.

come to
The ball rolled down the hill and came to rest against a tree.

break, day, interval (AmE), period, time
area, stop (both AmE)
room (usually restroom) (= room with a toilet)
home (= for old or sick people)

at rest
At rest (= when not moving) the insect looks like a dead leaf.

rest from
The doctor advised him to take a complete rest from the gym.

a day of rest

casually, gently, lightly, loosely, softly
heavily
comfortably
Her head was resting comfortably against his chest.

peacefully, quietly
safely
He could rest safely in this place.

lazily
His hand was resting lazily against the steering wheel.

briefly, momentarily
awhile

let sth
She let his hand rest heavily on hers.

have to, need to
want to, would like to
stop to
I stopped to rest on one of the benches.

against
She rested the ladder against the wall.

atop (esp. AmE)
Her thin hands were resting atop the quilted bed cover.

in
I settled back, my hands resting in my lap.

on, upon
His hands rested lightly on her shoulders.

rest easy
I can rest easy (= stop worrying) knowing that she's safely home.

solely, squarely
It is rare for the responsibility for causing conflict to rest solely on one side.

entirely
The decision rests entirely upon how good a fighter you think she is.

largely, primarily
The success or failure of the film rests largely on the talents of the cast.

firmly
Our trade policy rests firmly on the foundation of free and open markets.

Rest is used with these nouns as the subject:
arm, chin, gaze, hand, head, hope, palm

Rest is used with these nouns as the object:
bone, cheek, chin, elbow, hand, head, palm, weight