The conventional way of doing things is not always the best way; sometimes innovation is necessary or beneficial.
A conventional question to help improve your vocabulary is to ask you to make a sentence using a word you have just learned.
Mordern day weapons are called conventional. :-]
Many believe that projected energy weapons will make conventional weapons obsolete.
It is, but it is not conventional English syntax or grammar.
"This is a ferociously short sentence."
Conventional ovens cook food much slower than microwaves.
to cut short
""This
Short sentence
This sentence is tantalizingly short.
Example sentence: We play after school.
I will change my oil from conventional oil to synthetic oil on my next oil change.