Both Uses of

vagrant
in
War and Peace

One told how he had taken a life, another had taken two, a third had set a house on fire, while another had simply been a vagrant and had done nothing.†
Chpt 14

vagrant = someone who is poor and has no regular home or job

For us that movement of the peoples from west to east, without leaders, with a crowd of vagrants, and with Peter the Hermit, remains incomprehensible.†
Chpt 15 *

vagrants = people who are poor and have no regular home or job

Definitions:

(1) (vagrant)
someone who is poor and has no regular home or job
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Less commonly, and especially long ago, you may see vagrant used to emphasize that a poor person wanders from place to place. Even more rarely, it can describe an animal as being in a place it usually is not, or to describe anything that varies or seems random such as the seeming haphazard direction in which a certain weed spreads, or the fleeting quality of something smelled for only an instant.