access, accession, accumulation, augmentation, boost, breakthrough,development,exaggeration,expansion,extension,gain,increment,raise,rise,spread,surge.swell
upgrade,
Plus..........increase......that's bout it
improve, better, increase, lift, boost, reinforce
Accrue, aquire, store, incorporate, increase, collect
improve, better, increase, lift, boost, reinforce
make worse, exaggerate, intensify, worsen, exacerbate, magnify, inflame, increase, annoy, bother, provoke, irritate, nettle
increase
Plus..........increase......that's bout it
increase, extent, continuing, expansion
The best synonym for "expand" in this context would be "increase in volume."
Collide
improve, better, increase, lift, boost, reinforce
expansion, increase, growth, jump, boost, upsurge
Accrue, aquire, store, incorporate, increase, collect
growth, increase, advance, progress, spread, expansion, enlargement
extra, supplement, increase, gain, bonus, extension, accessory, additive
thriving, successful, blooming, prospering, rampant
improve, better, increase, lift, boost, reinforce