Meaning of ANNOUNCEMENT in English
BAD : On almost every page there were announcements for cigarettesand tobacco.
GOOD : On almost every page there were advertisements for cigarettes and tobacco.
When you want to give people some important information, you make an announcement : 'Following the announcement of their marriage, they were pursued by crowds of journalists.'
An advertisement is an item in a newspaper, on television, etc, that tries to persuade people to buy something, apply for a job, etc: 'At this time of the year, the papers are full of holiday advertisements.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012