Believe:

[g-mark]

belief -
be⋅lief
   /bɪˈlif/ Show Spelled Pronunciation [bi-leef] Show IPA
–noun
1. something believed; an opinion or conviction: a belief that the earth is flat.
2. confidence in the truth or existence of something not immediately susceptible to rigorous proof: a statement unworthy of belief.
3. confidence; faith; trust: a child's belief in his parents.
4. a religious tenet or tenets; religious creed or faith: the Christian belief.
Origin:
1125–75; earlier bile(e)ve (n. use of v.); r. ME bileave, equiv. to bi- be- + leave; cf. OE gelēafa (c. D geloof, G Glaube; akin to Goth galaubeins)

If we take the above definition as true, then every single thing that we understand and recognize as true, is counted as a belief. So everyone is a believer in something, but being a believer does not mean you have faith.

Is something that is not true a belief? Even though we 'believe' it is true?


believe -
be⋅lieve
   /bɪˈliv/ Show Spelled Pronunciation [bi-leev] Show IPA verb, -lieved, -liev⋅ing.
–verb (used without object)
1. to have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so: Only if one believes in something can one act purposefully.
–verb (used with object)
2. to have confidence or faith in the truth of (a positive assertion, story, etc.); give credence to.
3. to have confidence in the assertions of (a person).
4. to have a conviction that (a person or thing) is, has been, or will be engaged in a given action or involved in a given situation: The fugitive is believed to be headed for the Mexican border.
5. to suppose or assume; understand (usually fol. by a noun clause): I believe that he has left town.
—Verb phrase
6. believe in,
a. to be persuaded of the truth or existence of: to believe in Zoroastrianism; to believe in ghosts.
b. to have faith in the reliability, honesty, benevolence, etc., of: I can help only if you believe in me.
—Idiom
7. make believe. make (def. 46).
Origin:
1150–1200; ME bileven, equiv. to bi- be- + leven, OE (Anglian) gelēfan (c. D gelooven, G glauben, Goth galaubjan)