acid / acidity
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acid
A chemical compound that has a pH value below 7 in aqueous solution, tastes sour, and reacts with many substances. Examples include citric acid or hydrochloric acid.
Vorsicht, diese Säure ist stark ätzend.
Careful, this acid is highly corrosive.
acidity
The quality of foods such as fruits or wine of having a sour or fresh taste. Balanced acidity is often perceived as a sign of quality.
Der Wein hat eine angenehme Säure, die gut zum Fisch passt.
The wine has a pleasant acidity that goes well with the fish.
acid / sharpness
In a figurative sense, this describes a biting, hurtful, or malicious manner in words or behavior. It refers to a form of verbal sharpness or spite.
Ihre Bemerkung war voller Säure und verletzte ihn tief.
Her remark was full of acid and hurt him deeply.
'Die Säure' (acid/acidity) is the noun related to the adjective 'sauer' (sour). This connection helps you understand the basic meaning in all contexts, whether chemical, related to taste, or figurative.
Die Zitrone ist sauer, weil sie viel Säure enthält.
The lemon is sour because it contains a lot of acid.
You can recognize the chemical meaning from signal words like 'ätzend' (corrosive), 'chemisch' (chemical), 'Labor' (laboratory), 'neutralisieren' (to neutralize), or from specific names like 'Salzsäure' (hydrochloric acid) or 'Schwefelsäure' (sulfuric acid).
Im Chemieunterricht haben wir mit verdünnter Säure experimentiert.
In chemistry class, we experimented with diluted acid.
When it comes to taste, 'Säure' (acidity) is often connected with foods and drinks such as 'Wein' (wine), 'Kaffee' (coffee), 'Obst' (fruit), or 'Joghurt' (yogurt). Adjectives like 'angenehm' (pleasant), 'frisch' (fresh), or 'ausgewogen' (balanced) describe the quality.
Dieser Apfel hat eine sehr erfrischende Säure.
This apple has a very refreshing acidity.
You can recognize the figurative, negative meaning in the context of communication. Typical words are 'Bemerkung' (remark), 'Kritik' (criticism), 'Stimme' (voice), or 'Worte' (words), often in the phrase 'voller Säure' (full of acid).
Seine Antwort war voller Säure und hat die Atmosphäre vergiftet.
His answer was full of acid and poisoned the atmosphere.
sharpness
Schärfe describes clear, critical harshness or a stern tone in words. Säure goes further, making a statement sound biting, spiteful, or malicious. Schärfe is appropriate for clear criticism; when the hurtful attitude should also be emphasized, Säure is more appropriate.
Die Säure in seiner Bemerkung zeigte, dass er die Kollegin bewusst verletzen wollte.
The malice in his remark showed that he deliberately wanted to hurt his colleague.
Die Schärfe in seiner Bemerkung zeigte, wie deutlich er die Arbeit der Kollegin kritisierte.
The sharpness of his remark showed how clearly he was criticizing his colleague’s work.
