Concertina vs. Accordion

Concertina and Accordion Definitions
Concertina
A small instrument with bellows like an accordion but with buttons in place of keys.
Accordion
A portable wind instrument with a small keyboard and free metal reeds that sound when air is forced past them by pleated bellows operated by the player.
Concertina
(musical instruments) A musical instrument, like the various accordions, that is a member of the free-reed family of musical instruments, typically having buttons on both ends.
Accordion
Having folds or bends like the bellows of an accordion
Accordion pleats.
Accordion blinds.
Concertina
Something resembling a concertina, such as a folded book, a bus door or a set of picture frames that are folded together.
Accordion
A box-shaped musical instrument with means of keys and buttons, whose tones are generated by play of the wind from a squeezed bellows upon free metallic reeds.
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Concertina
Coiled barbed wire for use as an obstacle.
Accordion
(GUI) A vertical list of items that can be individually expanded and collapsed to reveal their contents.
Concertina
A type of booklet label, consisting of up to 32 pages of booklet as an insert.
Accordion
(figurative) A set of items (concepts, links, or otherwise) that can be packed and unpacked cognitively, or their representation as a set of virtual object. en
Concertina
To become compressed into a shape reminiscent of a concertina
The car concertinaed into the wall.
Accordion
To fold up, in the manner of an accordion
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Concertina
To be drawn closer and farther apart repeatedly, or up and down, as if situated on a working concertina's folds
Accordion
A small, portable, keyed wind instrument, whose tones are generated by play of the wind upon free metallic reeds.
Concertina
A small musical instrument on the principle of the accordion. It is a small elastic box, or bellows, having free reeds on the inside, and keys and handles on the outside of each of the two hexagonal heads.
Accordion
A portable box-shaped free-reed instrument; the reeds are made to vibrate by air from the bellows controlled by the player
Concertina
Coiled barbed wire used as an obstacle
Accordion
Arranged in parallel folds;
Plicate leaves
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Concertina
Free-reed instrument played like an accordion by pushing its ends together to force air through the reeds
Concertina
Collapse like a concertina