Question

What is the difference between proficient and good?

Answer 1

There is a value difference between competent and proficient: While both refer to knowing a skill, competency can refer to the bare minimum required for acceptability. ... One can be competent without being spectacular, but continues to grow in his or her proficiency

Answer 2

proficient is a quality of being skilled or advanced at something, while good can have various meanings like good looks, good used as nice or goods i.e something that can be sold...