haulm vs halm

haulm and halm both are nouns.

Word	Noun	Adjective	Verb	Adverb
haulm	Yes	No	No	No
halm	Yes	No	No	No

As nouns, haulm and halm are synonyms defined as:

haulm and halm: stems of beans and peas and potatoes and grasses collectively as used for thatching and bedding

haulm (noun)	halm (noun)
stems of beans and peas and potatoes and grasses collectively as used for thatching and bedding	stems of beans and peas and potatoes and grasses collectively as used for thatching and bedding