Refers to a reasoned exchange of opinions, often in formal or academic contexts. Can be used as a standalone noun or as a suffix in compounds like 議論 (discussion) or 討論 (debate).
His argument is persuasive.
There was a lively debate on this issue.
Used for systematic explanations or principles, such as scientific theories or philosophical doctrines. Often appears in compounds like 進化論 (theory of evolution) or 唯物論 (materialism).
Darwin's theory of evolution is widely accepted.
He advocated a new economic theory.
Refers to a written work that presents an argument or analysis on a specific topic. Can be used as a suffix in titles like 〇〇論 (An Essay on 〇〇).
He has published many essays on education.
This book is a collection of treatises on the theory of happiness.
Experts are divided in their views on this issue.
His remark sparked a huge debate online.
There is also an argument that this policy has no effect.
理論 denotes a systematic, well-established theory (as in science), while 論 is the broader word that can mean any theory, argument, or essay.
説 usually points to a specific view or opinion someone holds, whereas 論 stresses the reasoned argument or systematic theory behind it, often in formal writing.
From Middle Chinese 論 (luənH). The kanji 論 combines 言 (speech) and 侖 (order, arrange), suggesting ordered speech or reasoning.
public opinion; consensus
debate; discussion
speech; expression of views; public discussion
sound argument; fair point; just reasoning
discuss; talk about; deal with · argue; dispute · take into consideration; make an issue of
different opinion; objection
point at issue; point in question
quarrel; argument; verbal dispute
of course; certainly; naturally
both arguments; both opinions
refute; defeat in argument; shoot down
inference; reasoning; deduction
out of the question; unacceptable; outrageous · irrelevant; not pertinent; outside the scope
discussion; debate; argument
cherished opinion; pet theory; personal view
discussion; debate; argument
graduation thesis; bachelor's thesis
discuss; talk about; deal with · argue; dispute · take into consideration; make an issue of
article; discourse; dissertation; argument; commentary · editorial; leading article; leader
tone; tenor; drift
comment; criticism; critique; review