Preposition: on

• horizon: The countryside is attractive rolling farmland with the nearby mountains brushing against the clouds on the horizon.

Adjective modifier

• fluffy: The pilot took us up to the fluffy clouds then let me do what I liked.

• frontal: Thin high cloud thickened during the morning with frontal cloud over Ireland moving into the Irish Sea.

• interstellar: In contrast, this image shows many old stars in addition to the interstellar clouds.

• thick: Where does he live, and why does he only ever appear at night or in thick cloud?

• patchy: Here there was patchy thin cloud with sunshine at first with the cloud thickening during the morning.

• dark: The dark clouds of war were on the horizon.

Converse of object

• billow: It burst into flames, sending out great billowing clouds of smoke.

• scud: The scudding clouds made the scene much more dramatic than it would otherwise have been.

Modifies a noun

• cuckoo: You may believe that I am living in ' cloud cuckoo land ' .

• droplet: When cloud droplets have a variety of sizes the corona is less distinct.

• forest: Finally, we headed into the cloud forest in search of the elusive resplendent quetzal.

Preposition: of

• dust: Stars usually form from collapsing clouds of dust, which means their earliest moments are hidden from view.

• smoke: These flares emit dense clouds of orange smoke, which is easier to see in bright sunlight than a burning red handheld.

Noun used with modifier

• cumulus: The huge schools of the jellyfish follow the sun around the lake, moving like cumulus clouds across a sky.

• cirrus: The ice crystals are in cirrus clouds, seen in the photographs above lower clouds behind which the sun set.

• cumulonimbus: Figure 9: Schematic diagram of a cumulonimbus cloud.

• mushroom: The mushroom cloud represented the logical culmination of industrial warfare.

• storm: Will and I then set off to brave the Fierce Ladies, storm clouds gathered and a deluge poured down upon the mountains.

• stratocumulus: The stratocumulus cloud obscured vision for day flying migrants and migrant watchers alike.