As nouns the difference between geology and humankind

is that geology is the science that studies the structure of the earth (or other planets), together with its origin and development, especially by examination of its rocks while humankind is the human race; mankind, humanity; Homo sapiens.

As nouns the difference between geology and theology

is that geology is the science that studies the structure of the earth (or other planets), together with its origin and development, especially by examination of its rocks while theology is the study of god, or a god, or gods, and the truthfulness of religion in general.

As adjectives the difference between geometric and constitutional

is that geometric is geometric while constitutional is relating to a legal or political constitution.

As a noun constitutional is

a walk that is taken regularly for good health and wellbeing.

As nouns the difference between geomorphology and geology

is that geomorphology is the study of landforms, their classification, origin, development, and history while geology is the science that studies the structure of the earth (or other planets), together with its origin and development, especially by examination of its rocks.

As adjectives the difference between geothermal and hydroelectric

is that geothermal is pertaining to heat energy extracted from reservoirs in the earth's interior while hydroelectric is that generates electricity by converting the energy of moving water.

As verbs the difference between gerbil and eat

is that gerbil is to rotate inside a monowheel or similar apparatus due to sudden acceleration or braking while eat is to ingest; to be ingested.

As a noun gerbil

is one of several species of small, jumping, murine rodents, of the genus genus: Gerbillus. In their leaping powers they resemble the jerboa. They inhabit Africa, India, and Southern Europe.

As nouns the difference between gerbil and lizard

is that gerbil is one of several species of small, jumping, murine rodents, of the genus genus: Gerbillus. In their leaping powers they resemble the jerboa. They inhabit Africa, India, and Southern Europe while lizard is any reptile of the order Squamata, usually having four legs, external ear openings, movable eyelids and a long slender body and tail.

As a verb gerbil

is to rotate inside a monowheel or similar apparatus due to sudden acceleration or braking.

As nouns the difference between germ and fungus

is that germ is (uk|derogatory) a german person while fungus is any member of the kingdom fungi; a eukaryotic organism typically having chitin cell walls but no chlorophyll or plastids fungi may be unicellular or multicellular.

As nouns the difference between germaphobia and germophobia

is that germaphobia is pathological fear of germs while germophobia is alternative form of germaphobia.

As nouns the difference between germicides and pesticides

is that germicides is plural of germicide while pesticides is plural of lang=en.