The difference between Affect and Alter

When used as nouns, affect means one's mood or inclination, whereas alter means one of the identities or personalities of a person with multiple personality disorder / dissociative identity disorder.

When used as verbs, affect means to influence or alter, whereas alter means to change the form or structure of.


check bellow for the other definitions of Affect and Alter

  1. Affect as a verb (transitive):

    To influence or alter.

    Examples:

    "The experience affected me deeply."

    "The heat of the sunlight affected the speed of the chemical reaction."

  2. Affect as a verb (transitive):

    To move to emotion.

    Examples:

    "He was deeply affected by the tragic ending of the play."

  3. Affect as a verb (transitive):

    Of an illness or condition, to infect or harm (a part of the body).

    Examples:

    "Hepatitis affects the liver."

  4. Affect as a verb (transitive, archaic):

    To dispose or incline.

  5. Affect as a verb (transitive, archaic):

    To tend to by affinity or disposition.

  6. Affect as a verb (transitive, archaic):

    To assign; to appoint.

  1. Affect as a verb (transitive):

    To make a show of; to put on a pretence of; to feign; to assume. To make a false display of.

    Examples:

    "to affect ignorance"

    "He managed to affect a smile despite feeling quite miserable."

  2. Affect as a verb (obsolete, transitive):

    To aim for, to try to obtain.

  3. Affect as a verb (transitive, now, _, rare):

    To feel affection for (someone); to like, be fond of.

  4. Affect as a verb (transitive, obsolete):

    To show a fondness for (something); to choose.

  1. Affect as a noun (obsolete):

    One's mood or inclination; mental state.

  2. Affect as a noun (obsolete):

    A desire, an appetite.

  3. Affect as a noun (psychology):

    A subjective feeling experienced in response to a thought or other stimulus; mood, emotion, especially as demonstrated in external physical signs.

  1. Alter as a verb (transitive):

    To change the form or structure of.

  2. Alter as a verb (intransitive):

    To become different.

  3. Alter as a verb (transitive):

    To tailor clothes to make them fit.

  4. Alter as a verb (transitive):

    To castrate, neuter or spay (a dog or other animal).

  5. Alter as a verb (transitive):

    To affect mentally, as by psychotropic drugs or illness.

  1. Alter as a noun (especially, in the plural):

    One of the identities or personalities of a person with multiple personality disorder / dissociative identity disorder.