Puzzle 4

Difference; dissimilarity

Adversary in a sporting match

Infant toy that may open and close its eyes

Step on someone's land illegally

Plausible, credible, likely

Indiana Jones searched for it: the Ark of the __

Protecting, standing watch over something

Connective protein found in skin and bone

Downward movement under the force of gravity

Someone who buys goods and services

Having no ear for music

A shot of strong coffee