Jazz dance is an umbrella term that can refer to several related dance styles. All of them are connected via common roots, namely tap, ballet, jazz music, and African-American rhythms and dance. Jazz dance originated from the African American vernacular dance of the late 1800s to the mid-1900s.
council/ counsel. A council is meeting for discussion or advice, but to counsel is a verb meaning to give advice. They sound exactly the same, but the language council met and decided to counsel you on how to keep them straight. Council is a group of people who get together to figure something out, or or a group chosen to give advice, like a student council.
The other counsel have described the difference between the documents which give authority to make financial decisions (Power of Attorney) and others that give directions (Living Will - one type of Advance Directive) or appoint someone to make health care decisions (another type of Advance Directive, which can be combined with instructions.)