seism vs temblor

seism and temblor both are nouns.

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

As nouns, seism and temblor are synonyms defined as:

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

Other synonyms of seism include earthquake, quake.

seism (noun)	temblor (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