Hi you all,
Can you tell me which of the two should I use to name acts of the legislature? I've always said Insurance Act, Taxation Act etc. as these are actually acts of Parliament. I use "law" as a general term and never include it in the names. Googling, however, returns quite many Laws and I simply cannot figure out what is better to use. Is it British English vs. American English or it depends on the system of government (I live in a parliamentary republic)?
Law is a generic term.

Acts are public laws enacted by the legislature.

Where I live, not every bill has a name (e.g. xyz Act). Usually it is reserved for a cohesive and comprehensive body of law on a subject, such as the "No Child Left Behind Act". But if I talk my legislator into passing a law on a lower speed limit, the legislation probably will not get a name like "The Speed Limit Act". That said, all public laws that pass are technically acts.

Just my 2 cents.

Perhaps someone else has a different opinion.

So if I don't agree with the Acts relating to Income Tax, I don't have to pay. Is that right?

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Thank you so much Julielai!
A law is something noone can argue with. eg the law of gravity

We all agree murder, stealing, assault, lying to get something, etc (and general being a ****) is wrong.

Noone is above the law. Not even a judge or a lawyer!

An act (of parliament) is more like a guideline, a rule if you like. Parliament sees a problem in society and writes an act to try to solve this. Technically, anyone can disagree with it, by protest or simply not voting for that party again. So technically it is not law. And technically if you not see youself as part of society, you do not have to live according to these acts.

However, if you (or the society you belong to) agree with the act, it is given the power of law, sodoing something contrary to an act is then unlawful.
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 Clive's reply was promoted to an answer.