In studies, people with a certain type of prostate cancer taking Zytiga (Abiraterone) delayed starting chemotherapy by about 8 months. Treats metastatic, castration-resistant prostate cancer (mCRPC). Zytiga (Abiraterone) is an oral tablet that's taken once a day.
Onslaught is a military term that refers to an attack against an enemy. It's safe to say that no one wants to be caught on the receiving end of an onslaught, because there will be lots of danger, destruction and probably death.
An attack may be by word; an aggression is always by deed. An assault may be upon the person, an aggression is upon rights, possessions, etc. An invasion of a nation's territories is an act of aggression; an intrusion upon a neighboring estate is a trespass. Onslaught signifies intensely violent assault, as by an army or a desperado, tho it is sometimes used of violent speech.