In zoology terms the difference between hydranth and hydrotheca

is that hydranth is an individual polyp of a hydroid colony while hydrotheca is one of the calicles that protect the hydrants in certain Hydroidea (Thecaphora).

As a noun pr

is house.

As an abbreviation ph is

.

As nouns the difference between time and tiny

is that time is while tiny is a small child; an infant.

As an adjective tiny is

very small.

As nouns the difference between melancholy and sugar

is that melancholy is (historical) black bile, formerly thought to be one of the four "cardinal humours" of animal bodies while sugar is ray, beam (of light or radiation).

As an adjective melancholy

is affected with great sadness or depression.

As nouns the difference between odore and smell

is that odore is smell, odour, odor, aroma, fragrance, scent while smell is a sensation, pleasant or unpleasant, detected by inhaling air (or, the case of water-breathing animals, water) carrying airborne molecules of a substance.

As a verb smell is

to sense a smell or smells.

As a noun brain is

the control center of the central nervous system of an animal located in the skull which is responsible for perception, cognition, attention, memory, emotion, and action.

As a verb brain is

to dash out the brains of; to kill by smashing the skull.

As nouns the difference between mayhem and upheaval

is that mayhem is a state or situation of great confusion, disorder, trouble or destruction; chaos while upheaval is the process of being heaved upward, especially the raising of part of the earth's crust.

As nouns the difference between byte and dog

is that byte is a byte, small binary data unit while dog is a mammal, canis lupus familiaris , that has been domesticated for thousands of years, of highly variable appearance due to human breeding.

As a verb dog is

to pursue with the intent to catch.

As a noun leash is

a strap, cord or rope with which to restrain an animal, often a dog.

As a verb leash is

to fasten or secure with a leash.

As nouns the difference between book and quandary

is that book is book while quandary is a state of not knowing what to decide; a state of difficulty or perplexity; a state of uncertainty, hesitation or puzzlement; a pickle; a predicament.