temblor vs seism

temblor and seism both are nouns.

Word	Noun	Adjective	Verb	Adverb
temblor	Yes	No	No	No
seism	Yes	No	No	No

As nouns, temblor and seism are synonyms defined as:

temblor and seism: shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity

Other synonyms of temblor include earthquake, quake.

temblor (noun)	seism (noun)
shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity	shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity