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.

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

Sentence1: Mollusks are invertebrates such as the common snail. 
Sentence2: snails have no backbone.
snail

Sentence1: Lakes are generally bigger and deeper than ponds. 
Sentence2: Scotland s lochs , including the famous Loch Ness, are glacial lakes.

Lakes