PDA - Personal Digital Assistant
Personal Digital Assistant is an electronic device, also known as a handheld device, used to access internet, Wi-Fi, Music Player, as a Mobile phone and many more things. Most Personal Digital Assistant today employ touchscreen technology.
The concept of Personal Digital Assistants are now superseded by Smartphones which has more functions and a better users interface.
PDA - Public Display of Affection
Public Display of Affection is the display of love or Affection of two persons by them publicly. It includes activities like Holding hands, Hair play, Hugging and Quick kiss.