Movements may arise from structural deformation, or may be induced by temperature variations or changes in moisture content.
Many theories on punishment exist, all of which are variations on a theme. A variation is a change or slight difference in a level, amount, or quantity. Every day without variation my grandfather ate a plate of cold ham. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers.
Noun variation (usually uncountable, plural variations) The act of varying; a partial change in the form, position, state, or qualities of a thing.
If you have many similar items that have different variations, such as color or size, you can also create a single fixed-price listing that includes all the variations you offer.