what is the karmvachya of naukar ghar ki safai karta hai and saadhu geeta path karenge

pls. answer fast..my exams are nearing!!!

Explain kritvachya?

Explain karam vachya?

explain bhavvachya?

what is bhavachaya?

what is the difference between 1 and 2?

what is vachya in english

 i want to know the differnce btwn karmvachya and bhavvachya in a easy way plz 

 still not understood