hail vs applaud

hail is a noun but applaud is not a noun.

Word	Noun	Adjective	Verb	Adverb
hail	Yes	No	Yes	No
applaud	No	No	Yes	No

As verbs, applaud is a hypernym of hail; that is, applaud is a word with a broader meaning than hail:

hail (noun)	applaud (noun)
enthusiastic greeting
many objects thrown forcefully through the air
precipitation of ice pellets when there are strong rising air currents

hail (verb)	applaud (verb)
greet enthusiastically or joyfully	express that something is worthy of praise
call for	clap one's hands or shout after performances to indicate approval
praise vociferously
be a native of
precipitate as small ice particles