piano chord
Gsus2
G1A2D5
The third replaced by the second. Nothing in it decides between major and minor.
What is true of it
Gsus2 is G, A and D — 1, 2 and 5 counted from G.
These are also the notes of Dsus4/G. Which name is right depends on what is underneath and what came before — the notes alone do not decide.