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Planetesimal vs Protostar - What's the difference?

planetesimal | protostar |

As nouns the difference between planetesimal and protostar

is that planetesimal is planetesimal while protostar is (star) a collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.

planetesimal

English

(wikipedia planetesimal)

Noun

(en noun)
  • Any of many small, solid astronomical objects, that orbit a star and form protoplanets through mutual gravitational attraction

    • See also

    * protoplanet * planetoid * minor planet * dwarf planet * major planet * superplanet * planet * planemo * mesoplanet * asteroid

    protostar

    English

    Noun

    (en noun)
  • (star) A collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star.