what is the meaning of "convention " ?the difference among the three words "convention ,ritual , custom"

Question

Answer

Enclosed please kindly locate the information regarding the enquired words:

http://www.wordreference.com/definition/convention
http://www.wordreference.com/definition/ritual
http://www.wordreference.com/definition/custom

Hopefully the webpages may give you a better idea.  Good luck.

Answer

Have a look at www.thefreedictionary.com.  Type in each word.