This is the 5203rd most frequent Russian word.
ничто
"Ничто" means "nothing" in English.
Here, "ничто" functions as the subject of the sentence, implying the absolute absence of any obstacle.
Ничто не может помешать мне выполнить эту задачу.
Nothing can stop me from completing this task.
In this case, "ничто" serves as the subject and emphasizes that no factor brought about a change.
Кажется, ничто не изменило его решения.
It seems like nothing changed his decision.
Here, "ничто" is used metaphorically to express a sense of worthlessness or insignificance.