✅ To bask means to enjoy and savor a pleasant sensation (bask in the warm sunlight).

✅ To revel means to take pleasure or delight in something (revel in the chance to share knowledge).

✅ Both of these words mean to enjoy something.

✅ Bask suggests really enjoying something pleasant, whereas revel suggests taking pride or pleasure in something (She reveled in her sudden freedom; She basked in the attention).

✅ A branch is a particular division of a larger business or other establishment (The local branch of our county library).

✅ Arm refers to a specific area of a business or government that deals with a particular thing (the investigative arm of the government).

✅ These words both refer to specific subsections of businesses, governments, and organizations.

✅ Arm refers to a subsection of an organization that has a specific job, whereas branch refers to one of many local subsections of a larger business or organization (That bank opened up a new branch down the street; The legal arm of the business deals with these matters).

✅ Commemorative refers to something done in order to serve as a memorial or reminder for an event or occasion (a commemorative dinner).

✅ Celebratory refers to something done in order to celebrate an event or occasion (a celebratory ice-cream).

✅ Both of these words refer to things which honor a certain event.

✅ Commemorative can suggest a somber or serious tone, whereas celebratory often suggests a happier, more festive tone (To mark the tenth anniversary, we had a commemorative get-together; We had a celebratory feast after our exam results were released).