Rain, rain, what's the difference between two rainy ones? How to use them separately? For example.

Rain can be used as a verb or noun. As a verb, it is often used as an intransitive verb, meaning "rain". The noun is "rain".

First of all, rain is an uncountable noun, so rain is only a three-syllable form, not a word.

It often rains. It often rains.

It is raining outside. It is raining outside.

It in these two sentences refers to the weather and is generally used as a formal subject.

Secondly, rainy is an adjective used to modify nouns, usually used with day.

Today is a rainy day. Today is a rainy day.

It is rainy in spring. It is rainy in spring.

The same is true for other weather words, but not necessarily for verbs. You have to see if you can "rain" like Sun, so you can only use clear as the noun "Sun" and sunny as the verb "Sunny"

Rain 1 . n Rain； Rain; Rainy days; rainy season

2. 6. It rains; rain

In large quantities; In large quantities; Lead to a large decline

Rains 1。 (noun) Rainy season (plural form of rain)

Rain (the third person singular of rain)

Rainy; Rainy

Rain can be used as a noun or verb.

1, as a noun, rainy day, heavy rain-rainstorm

It is raining. It will rain.

Rains as a noun is the plural of the noun rain, rainy season

It is raining outside. It is raining outside.

Rainy days are adjectives.

Is it rainy today? Is it raining today?