This deal is very advantageous for him.
この計画には利もあれば害もある。
This plan has both advantages and disadvantages.
商人たちは利を求めて各地を旅した。
The merchants traveled far and wide in search of profit.
害 means 'harm' and is the standard opposite of 利 'benefit', as seen in the compound 利害 (advantages and disadvantages).
利 and 理 share the same reading り but 利 means 'benefit/profit' while 理 means 'reason/logic', so learners must distinguish them by kanji and meaning, not sound.
use; utilization; application
victory; triumph; win
right; privilege
convenient; handy; useful
profit; gains · benefit; advantage; good · grace; blessing; miracle
Standard kanji spelling; high-frequency news and common vocabulary.
The kanji 利 originally depicts a blade cutting grain, suggesting sharpness and utility, which extended to 'advantage' and 'profit'. The reading り is the Sino-Japanese on'yomi.
advantage; merit; benefit
profit-making; commercial
convenience
self-interest; selfishness
advantages and disadvantages; interests
Buddhist relics; cremated remains of a holy person · grain of rice; cooked rice
vested interest; rights; concession
interest (on a deposit, loan, etc.)
gravel; ballast; pebbles · child; kid; rugrat
welfare; well-being; benefits
clever; intelligent; bright; smart; wise; sensible; shrewd · well-behaved; obedient; good
interest (on a loan, deposit, etc.)
intelligence; cleverness; innate aptitude
interest rate hike; increase in interest rates
yield; return; interest rate
gain; profit; benefit; amplification
divine grace; blessing; answer to a prayer · benefit; help
diuresis; urination; promoting urination
sharp; keen-edged; acute · keen; incisive; acute
altruism
interest rate
one advantage; a single merit