Difference between round, circular, and spheric?

[Si2007]

Hi everybody,

I have two questions :

1) what's the difference between : "round", "circular", and "spheric"?

2) To my understanding both following sentences are correct :
a) S.O.S is the abbreviation of "save our souls".
b) S.O.S. is the abbreviation for "save our souls".

What is the difference in meaning between using "of" and "for" in the same sentence.

Thank you in advance.

[Milanya]

[Alan]

Hi Si2007,

I would use 'for' in your sentences. It has the sense of 'this abbreviation stands /these letters stand for ...'

Alan
_________________
English as a Second Language
You can read my ESL story Phrasal Verbs/hold

[Si2007]

Thanks a lot Milanya and Alan ... I love you all so much !