ADJ
- dense, heavy, thick
- light
- fluffy
- cirrus, cumulus
- high, low
- broken, scattered
- skies of broken cloud
- fast-moving, scudding
- black, dark, grey, white
- rain, storm, threatening, thunder
- Rain clouds were looming on the horizon
QUANT
- band, bank, layer, mass, wisp
- a layer of high cloud
VERB + CLOUD
- seed (= to place a substance in a cloud to make it produce rain)
CLOUD + VERB
- form, gather, mass
- Dark clouds were gathering in the west
- cover sth, envelop sth, obscure sth
- break, clear, disperse, lift, part
- The clouds broke a little, and the sun came out
- drift, float, hang, hover, loom, move, pass, race, roll, scud, swirl
- Thick cloud hung over the moor. A cloud passed over the sun. White clouds scudded across the sky
CLOUD + NOUN
- bank, cover, formation
- The cloud cover is quite dense today
PREP
- above/below the ~s
- flying above the clouds
- through the ~s
- She could see the sun through the clouds
PHRASES
- a break in the cloud(s), a layer of cloud
ADJ
- great, huge
- a great cloud of grey smoke
- dense, thick
- billowing, swirling
- mushroom
- the mushroom cloud from a nuclear bomb
- dust, radioactive, smoke
PREP
- ~ of
- a thick cloud of steam