mud vs bleaching clay

mud and bleaching clay both are nouns.

Word	Noun	Adjective	Verb	Adverb
mud	Yes	No	Yes	No
bleaching clay	Yes	No	No	No

As nouns, bleaching clay is a hyponym of mud; that is, bleaching clay is a word with a more specific, narrower meaning than mud:

Other hyponyms of mud include bleaching earth, mud pie, mire, slop.

mud (noun)	bleaching clay (noun)
slanderous remarks or charges	an adsorbent clay that will remove coloring from oils
water soaked soil; soft wet earth

mud (verb)	bleaching clay (verb)
soil with mud, muck, or mire
plaster with mud