The difference between Convertible and Synonymous

Convertible as an adjective (historical, _, currency):

Able to be converted, particularly: Able to be exchanged, one for the other, especially # Able to be exchanged for specie. # Able to be exchanged for foreign currency. # Able to be exchanged for a different class of security (usually common stock) under certain set terms. Able to undergo conversion (i.e., inversion) without falsehood. Able to be turned, especially # Able to be turned in a different direction. #* 1635, Nathanael Carpenter, Geography Delineated Forth in Two Bookes (1.4.77) #*: The Axis of the Earth is supposed to haue a convertible nature. # Able to be turned to a different purpose. # Able to be turned to a different religion or belief. Able to be turned into a different thing, especially # Able to change from a closed to an open frame and back again. # Able to be easily digested.

Convertible as a noun (dated, in plural):

Interchangeable things or terms.

Convertible as a noun (vehicles):

A convertible car: a car with a removable or foldable roof able to convert from a closed to open vehicle and back again.

Convertible as a noun (finance):

A convertible security: a stock, bond, etc. that can be turned into another (usually common stock) under certain set terms.

Convertible as a noun (computing):

A computer able to convert from laptop to tablet and back again.

Synonymous as an adjective (construed with '''with''', narrower sense):

having an identical meaning

Synonymous as an adjective (construed with '''with''', broader sense):

having a similar meaning

Synonymous as an adjective (construed with '''with'''):

of, or being a synonym

Synonymous as an adjective (genetics, of a [[SNP]]):

Such that both its forms yield the same sequenced protein.