Sub-note

noun
1.
a brief record of something written down to assist the memory or for future reference.
2.
notes, a record or outline of a speech, statement, testimony, etc., or of one’s impressions of something.
3.
an explanatory or critical comment, or a reference to some authority quoted, appended to a passage in a book or the like:
a note on the origin of the phrase.
4.
a brief written or printed statement giving particulars or information.
5.
Library Science. additional information about a work, such as its special series or some other significant identification, included on the library catalog entry.
6.
a short, informal letter:
a thank-you note.
7.
a formal diplomatic or official communication in writing:
a note delivered by the ambassador.
8.
a paper acknowledging a debt and promising payment; promissory note.
9.
a certificate, as of a government or a bank, accepted as money.
10.
eminence, distinction, or reputation:
a man of note.
11.
importance or consequence:
few events of particular note.
12.
notice, observation, or heed:
to take note of warning signs; to be worthy of note.
13.
a characteristic or distinguishing feature:
a note of whimsy in the design of the house.
14.
a mark, quality, or indication of something, especially as a submerged but ubiquitous element:
There was just a note of bitterness in his films.
15.
a characteristic way of speaking or thinking:
His critics had begun to change their note.
16.
a signal, announcement, or intimation:
a note of warning in her voice.
17.
Music.

a sign or character used to represent a tone, its position and form indicating the pitch and duration of the tone.
a key, as of a piano.

18.
a tone sounded on a musical instrument.
19.
a musical sound or tone.
20.
a melody, tune, or song.
21.
a sound of musical quality, as one uttered by a bird:
attentive to the thrush’s note.
22.
any call, cry, or sound of a bird, fowl, etc.
23.
a new or unexpected element in a situation.
24.
a mark or sign, as of punctuation, used in writing or printing.
verb (used with object), noted, noting.
25.
to write or mark down briefly; make a memorandum of:
to note the places of interest.
26.
to make particular mention of in a writing:
She noted their extra efforts in her report.
27.
to annotate.
28.
to observe carefully; give attention or heed to:
Note the fine brushwork in this painting.
29.
to take notice of; perceive:
We noted his concern at the announcement.
30.
to set down in or furnish with musical notes.
31.
to indicate or designate; signify; denote.
Idioms
32.
compare notes, to exchange views, ideas, or impressions:
The returning tourists were sitting on the sun deck comparing notes.
noun
1.
a brief summary or record in writing, esp a jotting for future reference
2.
a brief letter, usually of an informal nature
3.
a formal written communication, esp from one government to another
4.
a short written statement giving any kind of information
5.
a critical comment, explanatory statement, or reference in the text of a book, often preceded by a number
6.
short for banknote
7.
a characteristic element or atmosphere: a note of sarcasm
8.
a distinctive vocal sound, as of a species of bird or animal: the note of the nightingale
9.
any of a series of graphic signs representing a musical sound whose pitch is indicated by position on the stave and whose duration is indicated by the sign’s shape
10.
Also called (esp US and Canadian) tone. a musical sound of definite fundamental frequency or pitch
11.
a key on a piano, organ, etc
12.
a sound, as from a musical instrument, used as a signal or warning: the note to retreat was sounded
13.
short for promissory note
14.
(archaic or poetic) a tune or melody
15.
of note

distinguished or famous: an athlete of note
worth noticing or paying attention to; important: nothing of note

16.
strike the right note, to behave appropriately
17.
strike a false note, to behave inappropriately
18.
(often foll by of) take note, to observe carefully; pay close attention (to)
verb (transitive; may take a clause as object)
19.
to notice; perceive: he noted that there was a man in the shadows
20.
to pay close attention to; observe: they noted every movement
21.
to make a written note or memorandum of: she noted the date in her diary
22.
to make particular mention of; remark upon: I note that you do not wear shoes
23.
to write down (music, a melody, etc) in notes
24.
to take (an unpaid or dishonoured bill of exchange) to a notary public to re-present the bill and if it is still unaccepted or unpaid to note the circumstances in a register See protest (sense 12)
25.
a less common word for annotate
note