As nouns the difference between ach and ack
is that ach is (military|us) while ack is the letter a as used in signalling and other types of communications.
As a proper noun ach
is (banking|us) , an electronic banking network often used for direct deposit and electronic bill payment.
As an interjection ack is
(radio communications) acknowledged or ack can be expressing distaste, alarm, or trepidation.
ach
English
Alternative forms
* ache
Noun
(
en noun)
(obsolete) A name given to several species of plants; as, smallage, wild celery, parsley.
ack
Alternative forms
* ack
Noun
(
en noun)
(internet) An acknowledgement either of a packet or a message received from a network.
Antonyms
* NAK
