to think, to consider, to believe...

cowardly, timid, easily frightened

memory, recollection, remembrance...

memory (of having seen something or someone before), remembrance, recollection...

to memorize, to memorise, to commit to memory...

guess, speculation, supposition

recollection, reminiscence

hypothesis, speculation, surmise...

(a) thought one will never forget, something one will always remember

jumping to hasty conclusions, conjecture

conjecture

main memory, main storage

real storage

mass storage

faint memory, vague memory, dim memory...

faint memory, vague memory, dim memory...

mnemonic

memory, ability to remember

mnemonics, art of memorizing, mnemonic device

storage unit, memory unit

storage sequence

storage cell, storage element

virtual memory, virtual storage

secondary memory

short-term memory

long-term memory

working memory

external storage, auxiliary storage

buffer storage, buffer, buffer memory

internal storage, internal memory