nichts

The German word "nichts" is a pronoun that means "nothing". It is often used to indicate the absence of anything or the lack of a something specific. The word has no additional components as it is a basic pronoun and is used to express negation or non-existence.

Similar words to "nichts" in the context of negation or absence might not exist because "nichts" is quite fundamental in the German language to express the concept of "nothing". However, the word "kein" (no) can also be used in negating the presence of something when combined with nouns.

There might not be a clear difference to mention here related to similar words, since "nichts" is specific in its use to represent the concept it conveys.