piano chord
Fsus2
F1G2C5
The third replaced by the second. Nothing in it decides between major and minor.
What is true of it
Fsus2 is F, G and C — 1, 2 and 5 counted from F.
These are also the notes of Csus4/F. Which name is right depends on what is underneath and what came before — the notes alone do not decide.