size

As nouns the difference between specifications and size

is that specifications is while size is subject, topic.

As nouns the difference between size and physics

is that size is subject, topic while physics is the branch of science concerned with the study of properties and interactions of space, time, matter and energy or physics can be .

As a verb physics is

(physic).

As a noun size

is subject, topic.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between size and stature

is that size is subject, topic while stature is a person or animal's natural height when standing upright.