Amines are organic compounds that contain a nitrogen atom with a lone pair, leading to intermolecular hydrogen bonding similar to alcohols but generally weaker due to nitrogen's lower electronegativity compared to oxygen. This results in amines having lower boiling points than alcohols of similar molecular weight. In contrast, ethers lack the hydrogen bonding due to the absence of a hydrogen attached directly to the electronegative atom, giving them even lower boiling points and making them less soluble in water than amines and alcohols of comparable size.