blog vs web log

blog and web log both are nouns.

Word	Noun	Adjective	Verb	Adverb
blog	Yes	No	Yes	No
web log	Yes	No	No	No

As nouns, blog and web log are synonyms defined as:

blog and web log: a shared on-line journal where people can post diary entries about their personal experiences and hobbies

blog (noun)	web log (noun)
a shared on-line journal where people can post diary entries about their personal experiences and hobbies	a shared on-line journal where people can post diary entries about their personal experiences and hobbies

blog (verb)	web log (verb)
read, write, or edit a shared on-line journal