Hi guys. good evening. I hope you're all ok and doing fine. We've already discussed a good number of grammar items. Now let's talk about the uses of 'non-finite' verbs. You know verbs are mainly of two kinds: finite and non-finite. Finite verbs are tense-based and are used as such. But non-finite verbs have nothing to do with tenses. Look below and try to understand the contexts of their uses.
Going uphill was very difficult. A rolling stone gathers no moss.  
Carefully note that both going and rolling have been derived from the verbs go and roll. But their use here is different. Going (=go+ing) is now a noun, subject to the verb is but rolling (=roll+ing) is an adjective, modifying stone.
Note: When the ing form of a verb acts as a noun, it's gerund; but when it acts as an adjective, it's a participle, though they look the same. These are present participles and such participles are called 'participial adjectives'.
Now look at another kind of participle.  Look below:
We felt insulted at his behavior. A burnt child dreads the fire.
Here, insulted (past participle of the verb insult) and burnt (past participle of the verb burn) are both acting as adjectives. These are also called participial adjectives.
This is all for now guys. We'll discuss more uses of these two kinds of non-finite verbs next time. Feel free to ask any question. Good night and sweet dreams.