The difference between Adventitious and Spontaneous
When used as adjectives, adventitious means from an external source, whereas spontaneous means self-generated.
check bellow for the other definitions of Adventitious and Spontaneous
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Adventitious as an adjective:
From an external source; not innate or inherent, foreign.
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Adventitious as an adjective:
Accidental, additional, appearing casually.
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Adventitious as an adjective (genetics, medicine):
Not congenital; acquired.
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Adventitious as an adjective (biology):
Developing in an unusual place or from an unusual source.
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Spontaneous as an adjective:
Self-generated; happening without any apparent external cause.
Examples:
"He made a spontaneous offer of help."
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Spontaneous as an adjective:
Done by one's own free choice, or without planning.
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Spontaneous as an adjective:
Proceeding from natural feeling or native tendency without external or conscious constraint
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Spontaneous as an adjective:
Arising from a momentary impulse
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Spontaneous as an adjective:
Controlled and directed internally; self-active; spontaneous movement characteristic of living things
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Spontaneous as an adjective:
Produced without being planted or without human labor; indigenous
Examples:
"a spontaneous growth of wood"
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Spontaneous as an adjective:
Random.
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Spontaneous as an adjective:
Sudden, without warning.