modulate
The science word "key" means important or critical.
The key details are the details which tell you the main idea of that word.
because LOVE is they key to the five letter word HEART.......
it means it is the right thing
Express elevator is a means of transportation.
key
key
okey dokey
Biology
key kid
Kin kit key
Sypher means key word or phrase and riddle or a puzzle