In American business, snarkily, CVs are resumes from people who haven't learned how to edit.

US resumes are ideally 1 page with 2 pages (IMHO) being acceptable if one has enough experience.

American CVs spell out everything with a length that scales linearly with experience. Every publication. Every role. Major projects. Awards. Etc. For long-time academics these can run over 10 pages. A recent PhD recipient might use 3-4 pages for a CV.

>> US resumes are ideally 1 page with 2 pages (IMHO) being acceptable if one has enough experience

What if someone has 25 years of experience and held 10 different positions during that time, has a lot of ceritifications and other credentials? How do you fit all that on just two pages?

I tend to go back to 2009 and write previous experience available on request. I put writing in a sidebar, probably would do the same as certifications so I doubt you would have anything overflowing the first page. Anyway I am thinking to chop off writing at about 4-5 lines and then write previous writing available on request.

What is pertinent to the role for which you are applying? Focus on that.

Not American either but CVs (Curriculum Vitae, course of life) are much more comprehensive than resumes. If you're a researcher then you'd include a list of all of your published work, presentations, lectures, grants, scholarships, professional associations, etc.

In the US, the CV term tends to be used more in academia and research while resume tends to be used more elsewhere. And, in academia, you're more likely to list the sort of things you mentioned. Though the terms certainly can be used interchangeably. I have a ton of (non-academic) publications as well but, other than a couple books, I'd just include a hyperlink to a pubs page on my website that has a sampling.