What is the difference between paintings and sketches?

[Roni]

Synonym Search, Intermediate level

ESL/EFL Test #125 "Synonyms for task and duty", question 5

Dave, I can help you if you want. I'm very good at drawing and I could make some ......... for you to show what it looks inside, just quick drawings without too much detail.

(a) sketches
(b) scratches
(c) plans
(d) paintings

Synonym Search, Intermediate level

ESL/EFL Test #125 "Synonyms for task and duty", answer 5

Dave, I can help you if you want. I'm very good at drawing and I could make some sketches for you to show what it looks inside, just quick drawings without too much detail.

Correct answer: (a) sketches

Your answer was: incorrect
Dave, I can help you if you want. I'm very good at drawing and I could make some paintings for you to show what it looks inside, just quick drawings without too much detail.
_________________________

Can you explain why we couldn't use paintings for the question?

Roni

[Lost_Soul]

if you look at the definition of painting you will understand that a painting is not something that looks like a quick drawing without too much detail