WhatsApp Broadcasts are lists of recipients you can send regular (broadcast) messages to.
While this may seem similar to a WhatsApp Group, the major difference is that people cannot see other people in the same Broadcast List (making it far more private and secure).
WhatsApp broadcast works in a different way compared to groups. It is designed for a 1 way communication and participants in it don't know that the message they received was sent through the broadcast feature, neither can they see the other contacts within the broadcast list.
STEPS ON HOW TO SEND A BROADCAST MESSAGE
Step 1: Launch Whatsapp from your Smartphone
Step 2: Tap the "Three Dots" on the top right corner in the Navigation Bar
Step 3: Select "Broadcast Message".
Step 4: Tap on the contacts you wish to send a message to.
Step 5: Confirm your selection of contacts you have selected.
Step 6: Type your message and attach a photo, video, location, or contact if you wish.
Step 7: Tap "Send' to send your broadcast message.
