Side-slip and Skid

Side-slip verb - Slide sideways through the air in a downward direction in an airplane along an inclined lateral axis.

Skid and side-slip are semantically related. In some cases you can use "Skid" instead the phrase "Side-slip" as a verb or a noun.

Skid verb - To go to a lower level especially abruptly.

Side-slip and skid are semantically related. Sometimes you can replace phrase "Side-slip" with "Skid", this terms are similar.