And in Jiangxi province, five died from buildings collapsing, two in mudslides and one by a lightning strike, it said. In July last year a single mudslide triggered by days of heavy rain killed at least 14 people in two villages in the southwestern province of Yunnan.
Synonyms of group: crowd, company, party, band, troop | Collins English Thesaurus
People is human beings in general or considered collectively. A person is a human being regarded as an individual.If you are referring to two humans, yes, it would be grammatically correct to say persons. It is definitely a word. It is plural for an individual, but does not refer to a collective group of humans. It could be used in speaking about two humans of a household.