What are the social, esteem, and self-actualization levels in Maslow’s hierarchy?

"Physiological needs and safety are physical needs. Once these are satisfied, individuals focus on needs that involve relationships with other people. At Maslow’s third level are social needs, or needs for belonging (acceptance by others) and for giving and receiving friendship and love. Informal social groups on and off the job help people satisfy these needs. At the fourth level in Maslow’s hierarchy are esteem needs, which are needs for the respect of others and for a sense of accomplishment and achievement. Satisfaction of these needs is reflected in feelings of self-worth. Praise and recognition from managers and others in the firm contribute to the sense of self-worth. Finally, at the highest level in Maslow’s hierarchy are self-actualization needs, or needs for fulfillment, for living up to one’s potential, and for using one’s abilities to the utmost."