As nouns the difference between bookings and backlog
is that bookings is while backlog is an accumulation or buildup, especially of unfilled orders or unfinished work.
As a verb backlog is
(intransitive) to acquire something as a backlog, or to become a backlog.
backlog
English
Noun
(
en noun)
An accumulation or buildup, especially of unfilled orders or unfinished work
- He went to work on Saturday to try to work through the backlog of papers on his desk.
A reserve source or supply
Verb
(intransitive) To acquire something as a backlog, or to become a backlog