A tomato is not a vegetable... the sentence should say Pomidor to smaczny owoc
Scientifically speaking a tomato is a fruit; however from a culinary perspective it is not, cooks treat tomatoes like vegetables. So I guess you could say: pomidor to smaczny warzywo i owoc.
Does smaczne only count as tasty and not delicious?
Pomidor and warzywo have the wrong accentuation.