Technically, in the USA anyway, resumes and CVs are not the same.

A resume is the 1- to 2-page document that lists your work experience, education, relevant skills, etc. and contain zero complete sentences, let alone paragraphs. These are expected pieces of most job applications in most fields.

A CV has no page limit (I've never seen one that's 2 pages or less), is used almost exclusively in academia (professors are expected to submit CVs, not resumes), and is far more detailed than a resume. CVs list all publications, research, presentations, awards, etc., and include thorough, grammatically correct summaries of each.