The difference between Couple and Espouse
When used as verbs, couple means to join (two things) together, or (one thing) to (another), whereas espouse means to become/get married to.
Couple is also determiner with the meaning: two or a few, a small number of.
Couple is also noun with the meaning: two partners in a romantic or sexual relationship.
Couple is also adjective with the meaning: two or (a) small number of.
check bellow for the other definitions of Couple and Espouse
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Couple as a noun:
Two partners in a romantic or sexual relationship.
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Couple as a noun:
Two of the same kind connected or considered together.
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Couple as a noun (informal):
A small number.
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Couple as a noun:
One of the pairs of plates of two metals which compose a voltaic battery, called a voltaic couple or galvanic couple.
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Couple as a noun (physics):
Two forces that are equal in magnitude but opposite in direction (and acting along parallel lines), thus creating the turning effect of a torque or moment.
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Couple as a noun (architecture):
A couple-close.
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Couple as a noun (obsolete):
That which joins or links two things together; a bond or tie; a coupler.
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Couple as an adjective (informal, US):
Two or (a) small number of.
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Couple as a verb (transitive):
To join (two things) together, or (one thing) to (another).
Examples:
"Now the conductor will couple the train cars."
"I've coupled our system to theirs."
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Couple as a verb (transitive, dated):
To join in wedlock; to marry.
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Couple as a verb (intransitive):
To join in sexual intercourse; to copulate.
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Espouse as a verb (transitive):
To become/get married to.
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Espouse as a verb (transitive):
To accept, support, or take on as one's own (an idea or a cause).