Unlike other forms of digital marketing that often use advertisements and SEO strategies to promote a product or service, the field of content marketing explores how the creation of interesting content, such as blog posts, photos, videos, or even playlists, can create brand awareness and increase profits.

The PhD is a doctoral degree, specifically called a "doctor of philosophy" degree. This is misleading because PhD holders are not necessarily philosophers (unless they earned their degree in philosophy!). That said, PhD recipients are able to engage in thought experiments, reason about problems, and solve problems in sophisticated ways.

Part-time learning allows one to obtain a degree or qualification even if one cannot attend school on a full-time basis. One can learn at one's own pace, gradually accumulating credits that count towards a final qualification.