As verb "they are sick", plural of henuu, "is sick, ill"
Noun "disease, illness" from verb henuu (henuch), "is sick, ill"
Henoch in Mesa Grande, from verb henoo (henoch) "is sick, ill".
As seen here, vowels "o" and "u" are often interchangeable and are arguably the same vowel, pronounced more like "u" by some speakers and like "o" by others.