English words+English words = English words

This is called word formation.

"Peas" and "nuts" can be combined into "peanuts";

When++once = = whenever.

Foot+ball = football.

School+schoolbag = schoolbag.

Week+End = Weekend

Handwriting+handwriting = handwriting.

except for...

Noun+transitive verb +er/or painkiller

Noun+preposition+noun editor-in-chief

Pronoun+noun she-wolf female wolf

Verb+noun typewriter typewriter

Gerund+noun reading room reading room

Now participle+noun flying fish flying fish

Adjective+noun gentleman

Adverb+verb outbreak

Preposition+noun afternoon

2) Synthetic adjectives

Noun+adjective snow-white

english-speaking

Nouns++to++Nouns Face to Face

Noun+past participle artificial

Number+noun unidirectional unidirectional unidirectional

Numbers+nouns+adjectives Two years old.

Number+Noun +EDF Five Layers and Five Layers

Verb+adverb transparent

Adjective+noun advanced advanced advanced

Adjective+noun+noble thoughts.

Adjective+adjective light blue light blue

Adjective+present participle looks good.

Adverb+adjective evergreen

Adverb+present participle industrious

Adverb+past participle is well known.

Fast food specializes in fast food service

Preposition+noun downhill downhill

3) Synthetic verbs

Noun+verb sleep-walking sleepwalking

Adjective+verb whitewash paint

Adverb+verb overthrow

4) Synthetic adverbs

In a hurry

Adjectives and adverbs are everywhere.

Adverb+inverse adverb.

Preposition+noun first

Preposition+adverb forever and ever

5) Synthetic pronouns

Pronouns accusative +self her self

Master pronoun myself

Adjective+noun anything

6) Synthetic prepositions

Adverb+noun in it ...

Preposition+adverb within is within.

Adverb+preposition enters the entry