“A life interest in prop- erty, an interest in property for a term of years, or an income interest in a trust. It generally refers to a present or future interest in income from property or the right to use property that termi- nates or fails upon the lapse of time, the occurrence of an event, or the fail- ure of an event to occur.” Pub. 946, How to Depreciate Property (2020), IRS.