1. Worker, farmer, sister, brother, mother, father. These words refer to people in various capacities, such as "work" becoming "worker" to denote a laborer, and "teach" becoming "teacher" for an educator. Not all words can be transformed into nouns by adding "er," however. For instance, "read" becomes "reader," indicating a person who engages in reading, typically changing a verb to a noun.2. Tall, when modified to its comparative form "taller," indicates a height that is greater than another referred to object. This alteration applies to adjectives to express a comparison between two entities.