Rubber vs. Elastomer

Rubber and Elastomer Definitions
Rubber
A yellowish, amorphous, elastic material, composed almost entirely of an isoprene polymer, obtained from the milky sap or latex of various tropical plants, especially the rubber tree, and vulcanized, pigmented, finished, and modified into products such as electric insulation, elastic bands and belts, tires, and containers. Also called caoutchouc, India rubber.
Elastomer
Any of various polymers having the elastic properties of natural rubber.
Rubber
Any of numerous synthetic elastic materials of varying chemical composition with properties similar to those of natural rubber; an elastomer.
Elastomer
Any polymer having the elastic properties of rubber
Rubber
A low overshoe made of rubber.
Elastomer
Any of various elastic materials that resemble rubber (resumes its original shape when a deforming force is removed)
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Rubber
(Baseball) The rectangular piece of hard rubber that the pitcher must remain in contact with when making a pitch.
Rubber
An eraser.
Rubber
A tire.
Rubber
A set of tires on a vehicle.
Rubber
(Slang) A condom.
Rubber
One that rubs, especially one that gives a massage.
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Rubber
A series of games of which two out of three or three out of five must be won to terminate the play.
Rubber
An odd game played to break a tie.
Rubber
(uncountable) Pliable material derived from the sap of the rubber tree; a hydrocarbon polymer of isoprene.
Rubber
Synthetic materials with the same properties as natural rubber.
Rubber
An eraser.
Rubber
A condom.
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Rubber
(countable) Someone or something which rubs.
Rubber
One who rubs down horses.
Rubber
One who practises massage.
Rubber
A coarse towel for rubbing the body.
Rubber
An abrasive for rubbing with: a whetstone, file, or emery cloth, etc.
Rubber
(historical) The cushion of an electric machine.
Rubber
The rectangular pad on the pitcher's mound from which the pitcher must pitch.
Jones toes the rubber and then fires to the plate.
Rubber
Water-resistant shoe covers, galoshes, overshoes.
Johnny, don't forget your rubbers today.
Rubber
Tires, particularly racing tires.
Jones enters the pits to get new rubber.
Rubber
A hardship or misfortune.
Rubber
(sports) In relation to a series of games or matches between two competitors where the overall winner of the series is the competitor which wins a majority of the individual games or matches:
Rubber
The entire series, of an odd number of games or matches in which ties are impossible (especially a series of three games in bridge or whist).
Rubber
An individual match within the series (especially in racquet sports).
Rubber
A rubber match; a game or match played to break a tie.
Rubber
The game of rubber bridge.
Rubber
Not covered by funds on account.
Rubber
(telephony) To eavesdrop on a telephone call
Rubber
(slang) To rubberneck; to observe with unseemly curiosity.
Rubber
One who, or that which, rubs.
Rubber
In some games, as bridge or whist, the odd game, as the third or the fifth, which decides the winner when there is a tie between the players; as, to play the rubber; also, a contest determined by the winning of two out of three games; as, to play a rubber of whist.
Rubber
India rubber; caoutchouc; gum elastic; - also called natural rubber.
Rubber
Any substance, whether natural or synthetic, resembling India rubber with respect to its elasticity[1].
Rubber
A low-cut overshoe made of natural or synthetic rubber[4], serving to keep the feet and shoes dry when walking in the rain or on a wet surface; - usually used in the plural.
Rubber
A condom.
Rubber
Latex from trees (especially trees of the genera Hevea and Ficus)
Rubber
An eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil
Rubber
Contraceptive device consisting of a thin rubber or latex sheath worn over the penis during intercourse
Rubber
A waterproof overshoe that protects shoes from water or snow
Rubber
Coat or impregnate with rubber;
Rubberize fabric for rain coats
Rubber
Made of rubber and therefore water-repellent;
Rubber boots
Rubber
Returned for lack of funds;
A rubber check
A no-good check