load vs require

console.txt

~/westarete/src/flip-learning | 30248d7 | master
[532] $ echo 'puts "hi"' > hello.rb

~/westarete/src/flip-learning | 30248d7 | master*
[533] $ irb
irb(main):001:0> require 'hello'
LoadError: cannot load such file -- hello
	from /Users/woods/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from /Users/woods/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from (irb):1
	from /Users/woods/.rbenv/versions/2.2.2/bin/irb:11:in `<main>'
irb(main):002:0> require_relative './hello'
hi
=> true
irb(main):003:0> require_relative './hello'
=> false
irb(main):004:0> load 'hello'
LoadError: cannot load such file -- hello
	from (irb):4:in `load'
	from (irb):4
	from /Users/woods/.rbenv/versions/2.2.2/bin/irb:11:in `<main>'
irb(main):005:0> load './hello'
LoadError: cannot load such file -- ./hello
	from (irb):5:in `load'
	from (irb):5
	from /Users/woods/.rbenv/versions/2.2.2/bin/irb:11:in `<main>'
irb(main):006:0> load 'hello.rb'
hi
=> true
irb(main):007:0> load 'hello.rb'
hi
=> true
irb(main):008:0> load 'hello.rb'
hi
=> true