In uncountable|lang=en terms the difference between ignitability and flammability
is that ignitability is (uncountable) the condition of being ignitable while flammability is (uncountable) the condition of being flammable.
In countable|lang=en terms the difference between ignitability and flammability
is that ignitability is (countable) a measure of the extent to which something is ignitable while flammability is (countable) a measure of the extent to which something is flammable.
As nouns the difference between ignitability and flammability
is that ignitability is (uncountable) the condition of being ignitable while flammability is (uncountable) the condition of being flammable.
ignitability
English
Noun
(uncountable) The condition of being ignitable.
(countable) A measure of the extent to which something is ignitable.
flammability
Noun
(uncountable) The condition of being flammable
(countable) A measure of the extent to which something is flammable