First means number one, prior to, or before. First comes first, then everything else. Being first in line or class is generally good
Indicates position or location on a surface. Examples: book on table, cat sitting on chair
Prepositions can be placed before nouns or at sentence end. "In" indicates enclosed spaces or surrounded areas. "At" shows position at points or specific locations. "On" indicates position on surfaces or lines
Prepositions of place provide additional information about location. Five main groups based on their meaning: location, position, distance, direction, and enclosed areas
"In front of" indicates position relative to another object or space. Phrase specifies position ahead or facing a certain point. Helps describe placement of objects in various situations
Both words mean 'lower than'. They can be used interchangeably in certain contexts