Distinguish between accretion and intussusception?

Question

Distinguish between accretion and intussusception?

Answer 1

Accretion can mean a lot of things. Here are the many definition.

an increase by natural growth or addition

something contributing to growth or increase; "he scraped away the accretions of paint"; "the central city surrounded by recent accretions"

(astronomy) the formation of a celestial object by the effect of gravity pulling together surrounding objects and gases

(biology) growth by addition as by the adhesion of parts or particles

(geology) an increase in land resulting from alluvial deposits or waterborne sediment

(law) an increase in a beneficiary's share in an estate (as when a co-beneficiary dies or fails to meet some condition or rejects the inheritance)

In contrast intussusception is

a disorder in which the intestine folds into itself in a telescope fashion, causing obstruction (blockage).

Answer 2

accreation is smaller stuff accumulating on itself whereas intussusception is where the bowl telescopes on itself.