civilian clothing vs clothing

civilian clothing and clothing both are nouns.

Word	Noun	Adjective	Verb	Adverb
civilian clothing	Yes	No	No	No
clothing	Yes	No	No	No

As nouns, clothing is a hypernym of civilian clothing; that is, clothing is a word with a broader meaning than civilian clothing:

civilian clothing: ordinary clothing as distinguished from uniforms, work clothes, clerical garb, etc.
clothing: a covering designed to be worn on a person's body

Other hypernyms of civilian clothing include article of clothing, habiliment, vesture, wear, wearable.

civilian clothing (noun)	clothing (noun)
ordinary clothing as distinguished from uniforms, work clothes, clerical garb, etc.	a covering designed to be worn on a person's body