The term 'easy to understand' can be described using a variety of words, such as LUCID, CLEAR, plainspoken, BASIC, COHERENT, SIMPLE, and crystalclear. LUCID means easily understood or expressed; CLEAR means free from obscurity or ambiguity; plainspoken means expressed in a direct and straightforward manner; BASIC means forming the foundation or core of something; COHERENT means logically consistent; SIMPLE means not complicated or involved; and crystalclear means perfectly CLEAR and understandable. All of these words describe the concept of something being easy to understand.