What is a link affordance?
An affordance is a property in which the visual characteristics of a web element indicate its function. Links have certain characteristics or affordances that communicate their clickability. If you're affordances are weak, users will likely miss your link.
What is an example of an affordance?
An “affordance” refers to the possibility of an action on an object; for instance, we say that an elevator button affords being pressed, and a chair affords being sat on.