Other forms: inclinations
You can see the word "incline" inside inclination, which clues you in to the fact that inclination has to do with leaning. Sometimes the inclination is literal; in most cases it's about what you incline toward in a figurative sense.
An inclination is something you are leaning toward, a tendency you have. You could have a specific inclination for chocolate, or you could have an inclination that applies to a decision you are about to make: "Looking at this dessert menu, my inclination is to skip everything and just go home and have a chocolate bar."