The difference between Catchy and Infectious
When used as adjectives, catchy means instantly appealing and memorable (of a tune or phrase), whereas infectious means transmitted from one person to another, usually through the air breathed.
check bellow for the other definitions of Catchy and Infectious
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Catchy as an adjective:
Instantly appealing and memorable (of a tune or phrase).
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Catchy as an adjective (dated, mostly, figurative):
Tending to catch or ensnare; entangling.
Examples:
"a catchy question"
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Catchy as an adjective (dated):
Consisting of, or occurring in, disconnected parts or snatches; changeable.
Examples:
"a catchy wind"
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Infectious as an adjective (pathology, of an illness):
Transmitted from one person to another, usually through the air breathed.
Examples:
"Cancer is not infectious."
"More infectious diseases like the flu are usually less potent."
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Infectious as an adjective (pathology, of a person):
Able to infect others.
Examples:
"Despite feeling better, the patient is still infectious."
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Infectious as an adjective (of feelings and behaviour):
Spreading quickly from one person to another.
Examples:
"Her enthusiasm for work can be really infectious."
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Infectious as an adjective (informal):
Memorable and invoking excitement or interest.
Examples:
"Pop music is more infectious than elevator music."