application, petition, request / purchase order / prescription (written order for the provision of a medicine)

alone, only; lonely

(botany) Psychotria

(medicine) a condition producing skin rashes, normally indicating hives

simple (uncomplicated)

menu

peony

(music) solo

unit (part of whole) / unit (organisation, establishment, enterprise, place of employment, administrative unit, etc.) / Short for đơn vị đo lường (“unit of measure”).

(computing) menu (a list from which the user may select an operation to be performed)