Humectant and Ointment

Humectant noun - Any substance that is added to another substance to keep it moist.

Ointment and humectant are semantically related In some cases you can replace term "Ointment" with "Humectant", this nouns are similar.

Ointment noun - Toiletry consisting of any of various substances in the form of a thick liquid that have a soothing and moisturizing effect when applied to the skin.

Humectant and ointment are semantically related in demulcent topic. You can use "Humectant" instead a noun "Ointment".