gnome vs Sod's Law

gnome and Sod's Law both are nouns.

Word	Noun	Adjective	Verb	Adverb
gnome	Yes	No	No	No
Sod's Law	Yes	No	No	No

As nouns, Sod's Law is a hyponym of gnome; that is, Sod's Law is a word with a more specific, narrower meaning than gnome:

gnome: a short pithy saying expressing a general truth
Sod's Law: humorous axiom stating that anything that can go wrong will go wrong

Other hyponyms of gnome include Murphy's Law.

gnome (noun)	Sod's Law (noun)
a short pithy saying expressing a general truth	humorous axiom stating that anything that can go wrong will go wrong
a legendary creature resembling a tiny old man; lives in the depths of the earth and guards buried treasure