usually written using kana alone  noun or verb acting prenominally  adjective (generic) 

• easy (e.g. explanation, description), plain, familiar
• informal (e.g. greeting, expression), friendly, affable (e.g. person)

い adjective  adjective (generic) 

• friendly, sociable
• brittle, fragile, light

archaic  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• friendship, allegiance, support

search-only kanji form  proverb  expression 

• with time we forget those who have died, out of sight, out of mind
• friendships fade with distance

colloquial  noun  noun (generic) 

• hobby friend, friend gained through common interests or personality

dated term  slang  noun  noun (generic) 

• friend one only keeps in touch with via text messaging

expression  い adjective  adjective (generic) 

• affable, sociable, friendly

noun  noun (generic)  prefix 

• intimacy, closeness, friendliness
• close relative
• pro- (e.g. pro-American)

search-only kanji form  proverb  expression 

• with time we forget those who have died, out of sight, out of mind
• friendships fade with distance

noun  noun (generic) 

• goodwill ambassador, friendship ambassador