exoplanet

As nouns the difference between tree and exoplanet

is that tree is a large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age) while exoplanet is a planet which exists outside Earth's solar system.

As a verb tree

is to chase (an animal or person) up a tree.

As nouns the difference between taxonomy and exoplanet

is that taxonomy is the science or the technique used to make a classification while exoplanet is exoplanet.

As nouns the difference between exoplanet and exosystem

is that exoplanet is exoplanet while exosystem is (astronomy) a system of exoplanets and associated star.

As a noun exoplanet

is a planet which exists outside Earth's solar system.

As an adjective exoTrojan is

an alternative spelling of exotrojan.

As nouns the difference between exoplanet and starshade

is that exoplanet is a planet which exists outside Earth's solar system while starshade is a form of coronagraph disk designed to prevent starlight from interfering with the observation of exoplanets.

As a noun exoplanet

is a planet which exists outside Earth's solar system.

As an adjective exoplanetary is

of or pertaining to an exoplanet, a planet outside the solar system.