interchangeable

As adjectives the difference between interchangeable and synonymous

is that interchangeable is freely substitutable may be swapped at will while synonymous is having a similar meaning.

As an adjective interchangeable

is freely substitutable may be swapped at will.

As a noun needle is

a long, thin, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections etc.

As a verb needle is

to pierce with a needle, especially for sewing or acupuncture.

As an adjective interchangeable

is freely substitutable may be swapped at will.

As a verb knitting is

.

As a noun knitting is

the action of the verb to knit ; the process of producing knitted material.

As adjectives the difference between reciprocal and interchangeable

is that reciprocal is of a feeling, action or such: mutual, uniformly felt or done by each party towards the other or others; two-way while interchangeable is freely substitutable may be swapped at will.

As a noun reciprocal

is (arithmetic) of a number, the number obtained by dividing 1 by the given number; the result of exchanging the numerator and the denominator of a fraction.

As adjectives the difference between interchangeable and common

is that interchangeable is freely substitutable may be swapped at will while common is mutual; shared by more than one.

As a noun common is

mutual good, shared by more than one.

As a verb common is

(obsolete) to communicate (something).

As adjectives the difference between interchangeable and undefined

is that interchangeable is freely substitutable may be swapped at will while undefined is lacking a definition or value.