Farthest
Part of speech: adjective
Definition: Most distant in time, space or degree.
Part of speech: adverb
Definition: To the greatest degree or extent, or to the most distant point in time or space.
Example sentence: The Hubble Telescope can see the farthest galaxies. The Webb Telescope will see the farthest stars.
Furthest
Part of speech: adjective
Definition: A synonym of farthest.