Icelandicness vs property

Icelandicness and property both are nouns.

Word	Noun	Adjective	Verb	Adverb
Icelandicness	Yes	No	No	No
property	Yes	No	No	No

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

Icelandicness (noun)	property (noun)
The state or quality of being Icelandic.	any movable articles or objects used on the set of a play or movie
	a basic or essential property shared by all members of a class
	a construct whereby objects or individuals can be distinguished
	any area set aside for a particular purpose
	something owned; any tangible or intangible possession that is owned by someone