neither vs nothing

neither

• Not either one of two. 

• Similarly not. 

• Not one of two; not either. 

• Not either (used with nor). 

nothing

• Not any thing; no thing. 

• An absence of anything, including empty space, brightness, darkness, matter, or a vacuum. 

• Something trifling, or of no consequence or importance. 

• A trivial remark especially in the term sweet nothings. 

• A nobody (insignificant person).