Turning verbs to nouns
So through my research I've found 3 ways to turn verbs into nouns, adding こと or の at the end of the verb, or using the verb masu stem, such as きしみ. I was just wondering if anyone would be able to explain the differences between these methods?

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Answer

「の」is often used In colloquialism and expressions of feeling,like「見る」,「聞く」,「感じる」....for example,「太郎が英語で話しているのを聞いた」
「こと」mainly used for wrriten words and objective expressions,for example,「社长はA社との取引を行うことに决めた」

There seems some differences in tone..
「芝生に入ることを禁じる」＝keep off the grass 
「芝生に入るのはダメよ」＝hey,plz don‘t get into the grass