The difference between Hamster and Rat
When used as nouns, hamster means especially, the golden hamster, mesocricetus auratus, and the s of genus phodopus, often kept as a pets and used in scientific research, whereas rat means a medium-sized rodent belonging to the genus rattus.
When used as verbs, hamster means to secrete or store privately, as a hamster does with food in its cheek pouches, whereas rat means to betray someone and tell their secret to an authority or an enemy.
check bellow for the other definitions of Hamster and Rat
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Hamster as a noun:
Any of various Old-World rodent species belonging to the subfamily Cricetinae. especially, the golden hamster, Mesocricetus auratus, and the s of genus Phodopus, often kept as a pets and used in scientific research.
Examples:
"It is the cutest sight to see a hamster stuff his puffy cheeks with food; where is it going to store it?"
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Hamster as a noun:
Other rodents of similar appearance, such as the maned hamster or crested hamster, , mouse-like hamsters of genus , and the white-tailed rat ().
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Hamster as a verb (ambitransitive):
To secrete or store privately, as a hamster does with food in its cheek pouches.
Examples:
"synonyms stash"
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Rat as a noun (zoology):
A medium-sized rodent belonging to the genus Rattus.
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Rat as a noun (informal):
A term indiscriminately applied to numerous members of several rodent families (e.g. voles and mice) having bodies longer than about 12 cm, or 5 inches.
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Rat as a noun (informal):
A person who is known for betrayal; a scoundrel; a quisling.
Examples:
"What a rat, leaving us stranded here!"
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Rat as a noun (informal):
An informant or snitch.
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Rat as a noun (informal):
A scab: a worker who acts against trade union policies.
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Rat as a noun (slang):
A person who routinely spends time at a particular location.
Examples:
"Our teenager has become a mall rat."
"He loved hockey and was a devoted rink rat."
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Rat as a noun (UK, north-west, _, London, slang, vulgar):
Vagina.
Examples:
"Get your rat out."
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Rat as a noun:
A wad of shed hair used as part of a hairstyle.
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Rat as a verb (usually with “on” or “out”):
To betray someone and tell their secret to an authority or an enemy; to turn someone in, bewray.
Examples:
"He ratted on his coworker."
"He is going to rat us out!"
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Rat as a verb (of a dog, etc.):
To kill rats.
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Rat as a noun (regional):
A scratch or a score.
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Rat as a noun (nautical, regional):
A place in the sea with rapid currents and crags where a ship is likely to be torn apart in stormy weather.
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Rat as a verb (regional):
To scratch or score.
Examples:
"He ratted a vertical line on his face with a pocket knife."
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Rat as a verb (regional, rare, obsolete):
To tear, rip, rend.
Examples:
"'Ratted to shreds."