lassitude

"He is a student of life."

"After the heavy rain, the old wooden shed collapsed. "

"languor of convalescence"

"The baby was feeling the soft fur of the teddy bear. "

"After a long discussion, the committee finally settled the date for the school picnic. "

"A chair is furniture. Sofas are also furniture."

"The children's energy fueled their excitement for the school trip. "

"The student's lethargy prevented her from focusing during class. "

"The long day of studying left her feeling intense fatigue. "

"The teacher's voice was intense as she explained the difficult math problem. "

"Dishwashers wash dishes much more efficiently than most humans."

"A ship moves rapidly."