diploma vs HND

diploma and HND both are nouns.

Word	Noun	Adjective	Verb	Adverb
diploma	Yes	No	No	No
HND	Yes	No	No	No

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

diploma: a document certifying the successful completion of a course of study
HND: a diploma given for vocational training that prepares the student for a career in a particular area; good students may progress to a course leading to a degree

Other hyponyms of diploma include Higher National Diploma.

diploma (noun)	HND (noun)
a document certifying the successful completion of a course of study	a diploma given for vocational training that prepares the student for a career in a particular area; good students may progress to a course leading to a degree