As nouns the difference between salm and shalm
is that salm is obsolete form of psalm while shalm is obsolete form of shawm.
shalm
English
Noun
(
en noun)
* 1827 Thomas Carlyle, The Fair-Haired Eckbert
- These few words were continually repeated, and to describe the sound, it was as if you heard forest-horns and shalms sounded together from a far distance.
References
*
----