Final answer:
Electronegativity is the term that describes how tightly an atom attracts electrons in a bond, while electron affinity measures how much an element wants electrons.
Step-by-step explanation:
Electronegativity is the term that describes the degree to which an element attracts electrons in a bond. It is a dimensionless quantity calculated by comparing the amounts of energy required to break different types of bonds. On the other hand, electron affinity refers to the energy released or absorbed when an isolated gas-phase atom acquires an electron. It measures how much an element wants electrons.