The word naïve refers to lack of experience, wisdom, or judgment. Naïve also relates to the immaturity of a person. A naïve person can be easily misled or cheated. Both of these words infer a particular inclination to believe anything without considerable proof, no matter how unbelievable it might be. The words naïve and naivety are both from French and originally from a Latin word that implies childishness.

Naïve is an adjective which refers to lacking something, or something is missing, such as wisdom or experience. Naivety demonstrates a lack of understanding, often in a context where one neglects facts in favor of moral idealism. It means the gullible can be easily deceived.

These two mean the same thing but the only difference is their form. Naive is an adjective and it is often used to describe someone who thinks like a child. It may sometimes be used positively but most of the time, this has a negative connotation.

Someone native is considered to be easy to dupe and may not be very wise in making life decisions. Naivety is considered to be a noun. This is known to be a state of being naive. Someone who is in naivety may not have enough experience in the world to understand what is happening to him/her. There are also times that this noun will be used for someone who is not sophisticated at all.

Naive and Naivety are different forms of the same word. They both derive from the French language. It has a negative connotation and is used to compare someone mind to that of a child. The word naive is an adjective. A naive person is one who lacks any experience of the world and has a lapse in judgment and wisdom.

The word naivety is the noun of the word naive. It is the concept about one who lacks any experience of the world and has a lapse in judgment and wisdom. Though innocence isn't always a bad thing, when these words are used, it is.