nebular

As a noun protoplanet

is an astronomical object, approximately the size of the Moon, formed from the mutual gravitational attraction of planetesimals; they are thought to collide with each other and slowly form planets.

As an adjective nebular is

of or pertaining to a nebula.

As an adjective nebular

is (astronomy) of or pertaining to a nebula.

As a noun 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.

As adjectives the difference between cloudy and nebular

is that cloudy is covered with or characterised by clouds; overcast while nebular is (astronomy) of or pertaining to a nebula.

As a noun nebulae

is irregular plural of nebula.

As an adjective nebular is

of or pertaining to a nebula.

As a noun nebulas

is plural of nebula.

As an adjective nebular is

of or pertaining to a nebula.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective nebular is

(astronomy) of or pertaining to a nebula.