WordNet sense 1 (an elevated geological formation):

incline, slope, incline

WordNet sense 2 (a surface forming part of the outside of an object):

face

WordNet sense 3 (a lengthwise dressed half of an animal's carcass used for food):

side of meat

WordNet sense 4 ((sports) the spin given to a ball by striking it on one side or releasing it with a sharp twist):

English

WordNet sense 5 (an opinion that is held in opposition to another in an argument or dispute):

position

WordNet sense 6 (take the side of; be on the side of):

go with

WordNet sense 7 (situated at or extending to the side):

lateral

WordNet sense 8 (toward a full side):

broadside

WordNet sense 9 (take sides with; align oneself with; show strong sympathy for):

pull, root