供
とも · tomo · JLPT N3 · noun
companion
👥 供 = 亻 person + 共 together: a person who goes along with you
The left side 亻 means person, and 共 means together or shared. So the kanji is a person who travels with you, which is an attendant or companion. Tomo sounds like tomodachi (friend), and an お供 is the friend who comes along.
供 — person radical 亻 + 共 (together)
A semantic-phonetic compound: 亻 (person) gives the meaning of human action while 共 (together, gōng) supplies the sound. Originally meaning to present or offer jointly, it extended to 'supply, provide.' A second reading gòng means to make an offering or confess.