Pullback vs Fallback - What's the difference?

pullback | fallback |

As nouns the difference between pullback and fallback

is that pullback is the act or result of pulling back; a withdrawal while fallback is an act of falling back.

As an adjective fallback is

that can be resorted to as a fallback.

pullback

English

(wikipedia pullback)

Noun

(en noun)

The act or result of pulling back; a withdrawal.

(film) The act of drawing a camera back to broaden the visible scene.

That which holds back, or causes to recede; a drawback; a hindrance.

(architecture) The iron hook fixed to a casement to pull it shut, or to hold it partly open at a fixed point.

(finance) A reduction in the price of a financial instrument after reaching a peak

(category theory) Given a pair of morphisms

f:X\rightarrow Z

and

g: Y\rightarrow Z

with a common codomain, Z'', their pullback is a pair of morphisms $p_1:P\rightarrow X$ and $p_2:P\rightarrow Y$ as well as their common domain, ''P'', such that the equation $f\circ p_1 = g\circ p_2$ is satisfied, and for which there is the ''universal property'' that for any other object ''Q for which there are also morphisms

q_1: Q\rightarrow X

q_2: Q\rightarrow Y

; there is a unique morphism

u: Q\rightarrow P

such that

p_1\circ u = q_1

and

p_2 \circ u = q_2

Antonyms

* (category theory) pushout (Webster 1913)

fallback

English

Alternative forms

* fall-back

Noun

(en noun)

An act of falling back.

A backup plan or contingency strategy; an alternative which can be used if something goes wrong with the main plan; a recourse.

As a fallback, I suppose we can use typewriters if the word processing system fails.

(construction) A reduction in bitumen softening point, sometimes called refluxing or overheating in a relatively closed container.

Synonyms

* (act of falling back) ebbing, recession, retreat * (backup plan) back-up/backup, plan B, recourse

Derived terms

* automatic fallback * modulation fallback

Adjective

(-)

That can be resorted to as a fallback.

a fallback plan

Synonyms

* alternate/alternative, back-up/backup, secondary

Derived terms

* fallback font