The word Tausiyah comes from Arabic. The meaning is more or less "Advice" but the meaning is similar to the word Tablig or Ceramah, namely broadcasting the teachings of Islam.
In practical terms, Tausiah means religious lectures that contain messages in terms of truth and patience.
Word of Allah SWT:
"For the sake of time. In fact, humans are truly at a loss, except for those who believe and do righteous deeds and advice to obey the truth and advice to fulfill patience. " (Surah Al 'Asr: 1-3)