Manufacturer is a subset of a producer. Someone who grows corn is a producer of agricultural products, but is not a manufacturer. Someone that makes fabric is a manufacturer and a producer of fabric.
I must warn, that in an English classroom, there may be specific definitions that do not agree with that. Confirm with your teacher.
A manufacturer manufactures goods, a producer produces things like movies or songs.
A manufacturer is always a producer - but there are producers who are not manufacturers (like farmers, software programmers, musicians, etc).
Manufacturer which makes something out of raw material but producer which bring out something out of notthing.....
like producing fruits n vegetables from earth....
Is manufacturer and producer are same in terms of marketing?