what are the different between compounds and covalent compou

compound 化合物
A substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
<two or more elements> --- different elements
compound 化合物　可分為covalent compound和ionic compounds
covalent compound is compound formed by covalent bond 共價鍵
化合物的一種，由共價鍵形成
ionic compound is compound formed by ionic bond 離子鍵
化合物的一種，由離子鍵形成
I hope this can help with your understanding. =)

all are compounds, no difference