Cookie Purpose Descriptions:

Functionality - Cookies used for functionality allow users to interact with a service or site to access features that are fundamental to that service. Things considered fundamental to the service include preferences like the user’s choice of language, product optimizations that help maintain and improve a service, and maintaining information relating to a user’s session, such as the content of a shopping cart.

Security - Cookies used for security authenticate users, prevent fraud, and protect users as they interact with a service.

Analytics - Cookies used for analytics help collect data that allows services to understand how users interact with a particular service. These insights allow services both to improve content and to build better features that improve the user’s experience.

Advertising - Google uses cookies for advertising, including serving and rendering ads, personalizing ads (depending on your ad settings at g.co/adsettings), limiting the number of times an ad is shown to a user, muting ads you have chosen to stop seeing, and measuring the effectiveness of ads.