As nouns the difference between backworm and backword
is that backworm is a disease of hawks; filanders while backword is a contention, retort, or reply.
backword
English
Noun
(
en noun)
A contention, retort, or reply.
A contradiction or answer to put off an engagement; a countermand.
A section of commentary at the end of a book.
See also
* foreword