length vs temporal property

length and temporal property both are nouns.

Word	Noun	Adjective	Verb	Adverb
length	Yes	No	No	No
temporal property	Yes	No	No	No

As nouns, temporal property is a hypernym of length; that is, temporal property is a word with a broader meaning than length:

length (noun)	temporal property (noun)
a section of something that is long and narrow	a property relating to time
the linear extent in space from one end to the other; the longest dimension of something that is fixed in place
continuance in time
the property of being the extent of something from beginning to end
size of the gap between two places