Both translate as 'alto', but one is for people and vertical objects, the other for altitude and levels.
"Tall" describes the height of people, trees, buildings, and thin vertical objects measured from the base. "She's very tall" = she has great height. "A tall building" = a building of great height.
He is very tall. He is over two meters.
The Eiffel Tower is very tall.
She has tall boots that reach her knees.
"High" describes elevated position, altitude, level, price, or intensity, not necessarily measured from the ground. "High price" = an elevated price. "High speed" = fast speed. "High in the sky" = far above the ground.
The plane is flying at a high altitude.
The prices are very high this year.
She has a very high voice.
Common mistake
Trick to remember it
Quick rule
Describing the physical stature of a person, tree, or building? "Tall." Describing altitude, level, price, or intensity? "High."
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Buildings are the one case where both TALL and HIGH work, though with different nuances. "A tall building" emphasizes that it extends upward from its base (height as a vertical dimension). "A high building" emphasizes that it occupies an elevated position in space. In practice, TALL is more common for buildings. Fixed expressions do not change: "high five" (never "tall five"), "the high road," "high noon," "a tall order" (a difficult task, curiously uses TALL), and "it is a tall tale" (an exaggerated story, also TALL). The idiom "tall order" and "tall tale" show that TALL can also convey something excessive or unlikely.
Exercise 1 · Pick the right one
He's very _____ . He has to duck every time he goes through a doorway.
Exercise 2 · Pick the right one
The plane was flying at a very _____ altitude — over 30,000 feet.
Exercise 3 · Form the word
Both mean 'grande', but 'big' is more informal and emotional, 'large' is more formal and about size.
"Above" is at a higher level without contact; "over" implies covering, movement, or crossing.
"Actually" corrects or contrasts an assumption; "really" intensifies or confirms.
'Currently' means 'at the present time'; 'actually' means 'in reality', not 'nowadays'.
Bryan López
Founder of SpeakUP Academy