What do you mean by ‘Accompany’? How it is important in Human Relations?

Accompany is to go somewhere with (someone) as a companion or escort. As for example "the two brothers were to accompany us to Dhaka"

Accompany may be present or occur at the same time as (something else).For example--"the illness is often accompanied by nausea"

It is very important to know the ‘Accompany’ for deals with or survive. So it is very important as ‘Accompany’ in “Human Relations”.