The difference between Duplicate and Twofold

When used as adjectives, duplicate means being the same as another, whereas twofold means double.

Duplicate is also noun with the meaning: one that resembles or corresponds to another.

Duplicate is also verb with the meaning: to make a copy of.

Twofold is also adverb with the meaning: in a double degree.

check bellow for the other definitions of Duplicate and Twofold

Duplicate as an adjective:

Being the same as another; identical.

Examples:

"This is a duplicate entry."
Duplicate as an adjective (games):

In which the hands of cards, tiles, etc. are preserved between rounds to be played again by other players.

Examples:

"duplicate whist"

"duplicate Scrabble"

Duplicate as a verb:

to make a copy of

Examples:

"If we duplicate the information, are we really accomplishing much?"
Duplicate as a verb:

to do repeatedly; to do again

Examples:

"You don't need to duplicate my efforts."
Duplicate as a verb:

to produce something equal to

Examples:

"He found it hard to duplicate the skills of his wife."

Duplicate as a noun:

One that resembles or corresponds to another; an identical copy.

Examples:

"This is a duplicate, but a very good replica."
Duplicate as a noun (legal):

An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original.

Examples:

"rfquotek Burrill"
Duplicate as a noun:

A pawnbroker's ticket, which must be shown when redeeming a pledged item.
Duplicate as a noun:

The game of duplicate bridge.
Duplicate as a noun:

The game of duplicate Scrabble.
Duplicate as a noun (botany, zoology):

A biological specimen that was gathered alongside another specimen and represents the same species.

Twofold as an adjective:

Double; duplicate; multiplied by two.

Examples:

"The wheat produced a twofold harvest."
Twofold as an adjective:

Having two parts, especially two different parts.

Examples:

"a twofold nature; a twofold sense; a twofold argument"