I'm very confused about "early" and "earlier". While I was reading some various text below two things came up over and over like them in a rule.

1. Early this morning (Ex. 4~5 AM)
2. Earlier this month (Ex. 1~5 Nov.)

My question: If "early" and "earlier" were exchanged, would those sentences still be correct, and are the meanings the same as before?

1. Early this moring = earlier this morning?
2. Earlier this month = early this month?

I'm not sure you will understand my question but I hope so. Please give your answers! Thanks.

While I was reading some various text below two things came up over and over like them in a rule.

1. Early this morning (Ex. 4~5 AM)

2. Earlier this month (Ex. 1~5 Nov.)

If "early" and "earlier" were exchanged, would those sentences still be correct, and are the meanings the same as before?

1. Early this morning = earlier this morning?

2. Earlier this month = early this month?