Sequential vs Hierarchical - What's the difference?

As adjectives the difference between sequential and hierarchical

is that sequential is succeeding or following in order while hierarchical is pertaining to a hierarchy.

(-)

Succeeding or following in order.

* non-sequential

* sequential algorithm * sequential continuity * sequential compactness

* *

(-)

Pertaining to a hierarchy.

Of or pertaining to an ecclesiastic or priestly order.

Classified or arranged according to various criteria into successive ranks or grades.

It has been said that only a hierarchical society with a leisure class at the top can produce works of art.'' - ''source?