Carboxylic acid and Ethanoic acid

Carboxylic acid noun - An organic acid characterized by one or more carboxyl groups.

Ethanoic acid and carboxylic acid are semantically related. In some cases you can replace phrase "Ethanoic acid" with "Carboxylic acid", this phrases are similar.

Ethanoic acid noun - A colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals.

Carboxylic acid and ethanoic acid are semantically related. You can use "Carboxylic acid" instead a noun phrase "Ethanoic acid".