1.Word and Prases

A. The are eight word classes in English, sometimes called 'parts of speech'.

Verb : be, bring, decide, look, must, take, write

 Noun : car, dog, idea, London, sadness, time
Adjective : big, different, high, natural
Adverb : badly, often, probably, soon
Determiner : a, every, my, the, this
Pronoun : him, myself, something, you
Preposition : at, by, to, with

B. Some words belong to more than one word class. Here are some examples. 

promise (verb) :
  I promise I won't be late.
promise (noun) :
  I won't be late and that's a promise.

human (noun) :
  When did humans first land on the moon?
human (adjective) :
  We're defending our human rights.

that (determiner) :
  Look at that poster.
that (pronoun) :
  This is the car that I'd like.
that (conjunction) :
  I just know that it's true.

C. There are five kinds of phrase.

A verb phrase has an ordinary verb. There can also be one or more auxiliaries in front of the ordinary verb.
  was, arrives, can see, don't know, have been thinking
A noun phrase (*84) has a noun. The can also be a determiner and / or an adjective in front of the noun.
  music, some money, a good game
An adjective phrase is often just an adjective. There can also be an adverb of degree (*127) in front of the adjective.
  great, very old, most ridiculous
An adverb phrase in often just an adverb. There can be an adverb of degree (*127) in front of the adverb.
  sometimes, very carefully
A prepositional phrase is a preposition + noun phrase. *135A-B
  on the road, by Friday, for a long time

TIPS

"In English there are lots of verb that we can use as nouns is expressions such as have a look, make a copy and do a search. *47"