Use 'variant' to highlight small differences between similar things. The cherry variant has a slightly sour taste compared to the original.
Pro Tip 2/3
Options Available
'Variant' suggests there are multiple options or alternatives available. The software offers several user interface variants.
Pro Tip 3/3
Specialization
Use 'variant' when referring to a specialized form designed for a particular purpose or audience. They introduced a compact variant for small-space living.