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.

Ex Input:
Sentence1: adding salt to a solid decreases the freezing point of that solid. 
Sentence2: Water density decreases with temperature and increases with salt content.

Ex Output:
decreases


Ex Input:
Sentence1: if an object is kicked then force is exerted on that object. 
Sentence2: if an object is kicked then a measurement of newtons is exerted on that object.

Ex Output:
exerted


Ex Input:
Sentence1: Chakras are associated with the endocrine glands. 
Sentence2: most pituitary hormones control other Chakras.

Ex Output:

Chakras