Ointment and Sunscreen

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.

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

Sunscreen noun - A cream spread on the skin; contains a chemical (as PABA) to filter out ultraviolet light and so protect from sunburn.

Ointment and sunscreen are semantically related. Sometimes you can use "Ointment" instead a noun "Sunscreen".