Spearman's rank correlation coefficient is suitable for data measured on which measurement scale?

Spearman's rank correlation coefficient is suitable for data measured on an ordinal or interval scale. It is a non-parametric measure of correlation that assesses how well the relationship between two variables can be described using a monotonic function. It does not assume a linear relationship between the variables and is therefore appropriate for ordinal data where the exact numerical values may not be meaningful.

Ordinal