dressing vs medical aid

dressing and medical aid both are nouns.

Word	Noun	Adjective	Verb	Adverb
dressing	Yes	No	No	No
medical aid	Yes	No	No	No

As nouns, medical aid is a hypernym of dressing; that is, medical aid is a word with a broader meaning than dressing:

Other hypernyms of dressing include medical care.

dressing (noun)	medical aid (noun)
the activity of getting dressed; putting on clothes	professional treatment for illness or injury
the act of applying a bandage
processes in the conversion of rough hides into leather
a cloth covering for a wound or sore
making fertile as by applying fertilizer or manure
savory dressings for salads; basically of two kinds: either the thin French or vinaigrette type or the creamy mayonnaise type
a mixture of seasoned ingredients used to stuff meats and vegetables