Karma + Vikarma= Akarma

how to understand karma, Vikarma and Akarma!

well, what is manifiest outside and what is going on inside is very important!

Karma= swadharma, good action, meaning punaya karma according to scriptures!

Vikarma= with swadharma action + inward mind work should be tune with outward action otherwise can become wrong action, meaning not following according to scriptures! 

Akarma= inaction, meaning without reaction to work!