clay vs bleaching clay

clay and bleaching clay both are nouns.

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

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

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

clay (noun)	bleaching clay (noun)
the dead body of a human being	an adsorbent clay that will remove coloring from oils
a very fine-grained soil that is plastic when moist but hard when fired
water soaked soil; soft wet earth