As an initialism abp

is arterial blood pressure.

As a noun api is

.

As nouns the difference between pineapple and murder

is that pineapple is a tropical plant, Ananas comosus, native to South America, having thirty or more long, spined and pointed leaves surrounding a thick stem while murder is an act of deliberate killing of another being, especially a human.

As a verb murder is

to deliberately kill (a person or persons).

As a verb concentrate

is .

As a proper noun look is

or look can be .

As nouns the difference between analysis and synopsis

is that analysis is analysis while synopsis is synopsis.

As a verb stereotype

is .

As a noun distinction is

that which distinguishes; a single occurrence of a determining factor or feature, the fact of being divided; separation, discrimination.

As adjectives the difference between unreal and fantastical

is that unreal is fake; not real while fantastical is of or pertaining to fantasy.

As verbs the difference between insure and a

is that insure is to provide for compensation if some specified risk occurs. Often agreed by policy (contract) to offer financial compensation in case of an accident, theft or other undesirable event while a is (have) Have.

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 a noun a is

The name of the Latin script letter A/a.

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 pronoun a is

he.

As an interjection a is

a meaningless syllable; ah.