All terms in this list:

Automatic: working by itself with little or no direct human control.

Graphite: a gray, crystalline, allotropic form of carbon that occurs as a mineral in some rocks and can be made from coke. It is used as a solid lubricant, in pencils, and as a moderator in nuclear reactors

Biosphere: the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms

Homograph: each of two or more words spelled the same but not necessarily pronounced the same and having different meanings and origins

Geometry: the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs

Biodegradable: capable of being decomposed by bacteria or other living organisms

Thermometer: an instrument for measuring and indicating temperature, typically one consisting of a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol that expands and contracts in the tube with hea

Autograph: a signature, especially that of a celebrity written as a memento for an admirer

Biology: the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution

Speedometer: an instrument on a vehicle's dashboard indicating its speed

Geothermal: of, relating to, or produced by the internal heat of the earth.

Bionic: having artificial body parts, especially electromechanical ones.

Cartographer: a person who makes maps

Barometer: an insturument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude

Automobile: a road vehicle, typically with four wheels, powered by an internal combustion engine or electric motor and able to carry a small number of people.

Antibiotics: a medicine (such as penicillin or its derivatives) that inhibits the growth of or destroys microorganisms

Geology: he science that deals with the earth's physical structure and substance, its history, and the processes that act on it

Thermostat: a device that automatically regulates temperature, or that activates a device when the temperature reaches a certain point

Geode: a small cavity in rock lined with crystals or other mineral matter.

Odometer: an instrument for measuring the distance traveled by a vehicle

Epigraph: an inscription on a building, statue, or coin.

Autobiography: an account of a person's life written by that person.

Biography: an account of someone's life written by someone else.

Geography: the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries.