Which word does NOT belong with the others?

Freeway, interstate, and expressway are all high- speed highways; a street is for low-speed traffic.

A branch, leaf, and root are all parts of a tree. The dirt underneath is not a part of the tree.

Dodge, duck, and avoid are all synonyms meaning evade. Flee means to run away from.

The guitar, violin, and cello are stringed instruments; the flute is a wind instrument.

Loaf, sourdough, and pumpernickel are types of bread. A rye is not a bread type.

Loaf - Bread that is shaped and baked in one piece and usually sliced before being eaten.

Pumpernickel - Dark, dense German bread made from coarsely ground whole-grain rye.

Sourdough - Leaven for making bread, consisting of fermenting dough, typically that left over from a previous batch.

Rye - A wheatlike cereal plant that tolerates poor soils and low temperatures.

The yarn, twine, and cord are all used for tying. The tape is not used in the same way.

A leopard, cougar, and lion all belong to the cat family; an elephant does not.

The couch, table, and chair are pieces of furniture; the rug is not.

The cornea, retina, and pupil are all parts of the eye.

The noun, preposition, and adverb are classes of words that make up a sentence. Punctuation belongs in a sentence, but punctuation is not a class of word.