Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.

Q: Sentence1: Crops are plants that are grown for food or other uses. 
Sentence2: insects destroy plants.

A: plants
****
Q: Sentence1: Interestingly, a squid is also a mollusk. 
Sentence2: squids have a circulatory system with one or two hearts that pump blood.

A: squid
****
Q: Sentence1: a seismometer is used to measure the strength or magnitude of an earthquake. 
Sentence2: Instruments must be calibrated before they can measure the magnitude of an earthquake.

A:
magnitude
****