The word "梨树" is formed by combining the character "梨", meaning pear, with the character "树", meaning tree; together they create a compound noun where "梨" specifies the type of "树", resulting in the meaning "pear tree".
Word Definition - 梨树
lí shùLishu county in Siping 四平, Jilin; Lishu district of Jixi city 雞西|鸡西[jī xī], Heilongjiang; pear tree