司会
master of ceremonies, leading a meeting, presenter, host
新幹線
Japanese bullet train
白髪
white hair, grey hair
自然科学
natural science
書店
bookshop, bookstore
商社
trading company, firm
商店
shop, small store, business, firm
集合
gathering, assembly, meeting
習字
calligraphy, penmanship
集会
meeting, assembly, gathering, convention, rally