When you embark on something, you are starting it — and it's exciting. You might embark on a new career or embark on a trip to the Galapagos Islands. You wouldn't embark on a trip to the grocery store. The verb embark can be used specifically to refer to boarding a ship for a journey. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.