What's different of...a lot of/lots of/loads of

It's confusing..


1.a lot of/lots of/loads of

A lot of and lots of have the same meaning: they both mean a large amount or number of people or things. You can use them before countable and uncountable nouns:

1) A lot of people went to the game / Lots of people went to the game (Countable)

2) A lot of snow falls in the winter / Lots of snow falls in the winter (Uncountable)

Loads of is just a stronger form of "lots of" and is not heard very often in the English language, but can be used just the same.

1) Loads of people went to the game 

2) Loads of snow fell in the winter

2.everyone/ everybody
anyone/anybody

"Everyone" and "everybody" are the same thing meaning "one person" but everybody seems more casual. It is only a slight formality difference. 

I found this example online:

If I were hosting an event, I would say something such as, "Would everyone please take your seats".

If I were hosting a gathering of friends in my home, I would say something such as, "Everybody have a seat".

The same concept applies with anyone/anybody, with anybody being used more formally than anyone. They both, however, can be used interchangably (in place of one another).

what's different and..when do you use??