tree has 4 distinct synonyms spread across 4 of its 7 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
plant with trees
“this lot should be treed so that the house will be shaded in summer”
Synonyms, antonyms and the broader and narrower relations for tree come from Princeton University’s WordNet. Full sources and licences.
chase an animal up a tree
“the hunters treed the bear with dogs and killed it”
a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
a figure that branches from a single root
“genealogical tree”
English actor and theatrical producer noted for his lavish productions of Shakespeare (1853-1917)