ocd

As nouns the difference between ocd and conversion

is that ocd is (medicine|psychology) while conversion is conversion.

As an adjective finicky

is (informal) fastidious and fussy; difficult to please; exacting, especially about details.

As a noun ocd is

(medicine|psychology).

As nouns the difference between ocd and fantasy

is that ocd is (medicine|psychology) while fantasy is that which comes from one's imagination.

As a verb fantasy is

(literary|psychoanalysis) to fantasize (about).

As nouns the difference between ocd and rumination

is that ocd is (medicine|psychology) while rumination is the act of ruminating; ie chewing cud and other ruminants.

In medicine terms the difference between ocd and a

is that ocd is initialism of lang=en while a is a blood type that has a specific antigen that aggravates the immune response in people with type B antigen in their blood. They may receive blood from type A or type O but cannot receive blood from AB or B.

As nouns the difference between ocd and a

is that ocd is initialism of lang=en while a is The name of the Latin script letter A/a.

As a letter A is

: Apple starts with A.

As a number A is

: The item A is "foods", the item B is "drinks".

As a symbol A is

the highest rank on any of various scales that assign letters.

As an article a is

one; any indefinite example of; used to denote a singular item of a group.

As a preposition a is

To do with position or direction; In, on, at, by, towards, onto.

As a verb a is

(have) Have.

As a pronoun a is

he.

As an interjection a is

a meaningless syllable; ah.