attention

auction

audience

auditorium

business

businessman

career

communication

conference

convention

crowd

education

event

forum

group

information

instructor

keynote

knowledge

learning

lecture

lecturer

lesson

listen

listening

man

meeting

modern

notes

occupation

performance

person

powerpoint

presentation

press

reading

reception

school

seminar

session

sitting

spectator

speech

study

talking

teaching

team

training

workshop