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what sort of isomers are these?

For example, 3-Ethyl Phenol and 2,6-Dimethyl Phenol (2,6 Xylenol) What sort of isomers are these? They aren’t functional because the group is still alcohol. They aren’t metamers because they lie on the same side of the functional group. So would they be chain isomers, position isomers or something else perhaps?