Labeler is a tool used for placing labels on different objects or products for identification purposes. There are various synonyms for the word 'Labeler', such as sticker machine, labeling machine, tagger, marker, and decal applicator. A sticker machine is used to print and apply adhesive labels, while a labeling machine can apply labels to bottles, jars, or other containers in high volumes. The term 'tagger' is used for manual labeling of items with tags or labels. A marker is a pen or tool used to write labels or identification marks on different objects. A decal applicator allows users to apply decals or stickers to surfaces easily and accurately.