Necessaries / Necessities
Necessaries: things that are necessary but may not be indispensable; necessities: things that are absolutely indispensable.
e.g. Food and water are necessities of life.
e.g. The necessaries of life may include a house and a car.
Adherence / Adhesion
Much more: especially in a positive sense; much less: not to mention in a negative sense.
e.g. I would help a stranger in need, much more if he is my son.
e.g. She wouldn't even look at me, much less talk to me.
Obligatory / Obliging
Obligatory: compulsory; obliging: willing to help, kind and polite.
e.g. Attendance is obligatory, not an option.
e.g. She is obliging, always ready to help others.
On the contrary / On the other hand
On the contrary: the second statement cancels or contradicts what is said in the first statement; on the other hand: the second statement is in contrast to the first, but not necessarily irreconcilable to the first.
e.g. People thought that the Mayor was honest. On the contrary, he was the most dishonest man in the office.
e.g. On the one hand, the kitchen is spacious; on the other hand, the bedrooms are a bit small in size.
Adherence: following faithfully (metaphorically); adhesion: sticking to (literally).
e.g. No matter what may happen, our company will demonstrate to our shareholders our adherence to the project.
e.g. You can use this glue to strengthen the adhesion of these two pieces of material.
Defer / Infer
Defer: give way or yield to; infer: conclude.
e.g. He is a good kid: he always defers to his parents' wishes.
e.g. We can infer from your statement that you don't like this policy.
Accountable to / Accountable for
Accountable to: responsible to someone; accountable for: responsible for something
Stephen LauCopyright© by Stephen Lau