toxina

Remember that 'tóxico' describes something as being poisonous, while 'toxina' is the actual poisonous substance.

'Veneno' is a broader term for any poison, while 'toxina' is a poison of biological origin.

This word refers to the state of being poisoned or the act of poisoning, rather than the poisonous substance itself.

Often confused with 'toxina' due to similar spelling and meaning, but 'tóxico' is an adjective.

'Tóxico' means 'toxic' or 'poisonous,' describing something that has the properties of a toxin. 'Toxina' is the noun, referring to the poisonous substance itself.

Este produto é *tóxico*. (This product is *toxic*.) / A *toxina* botulínica é perigosa. (Botulinum *toxin* is dangerous.)

Both 'toxina' and 'veneno' refer to poisonous substances, leading to overlap in understanding.

'Veneno' is a broader term for any poisonous substance, whether natural or synthetic. 'Toxina' specifically refers to poisons produced by living organisms.

Ele foi picado por uma cobra e recebeu *veneno*. (He was bitten by a snake and received *venom*.) / A planta produziu uma *toxina* que afetou os animais. (The plant produced a *toxin* that affected the animals.)

In some contexts, 'droga' can refer to a harmful substance, which might be mistakenly associated with 'toxina'.

'Droga' primarily refers to medicinal substances or illicit drugs. While some drugs can be toxic, 'toxina' specifically denotes a biological poison.

Os médicos prescreveram a *droga* para aliviar a dor. (The doctors prescribed the *drug* to relieve the pain.) / A exposição à *toxina* causou problemas de saúde. (Exposure to the *toxin* caused health problems.)

Both are harmful substances in the environment, causing confusion between a general pollutant and a specific biological toxin.

'Poluente' is a substance that contaminates the environment, often man-made. 'Toxina' is a biologically produced poison.

A fábrica liberou *poluentes* no rio. (The factory released *pollutants* into the river.) / A bactéria liberou uma *toxina* que contaminou a comida. (The bacteria released a *toxin* that contaminated the food.)

Both are microscopic biological agents that can cause harm, leading to confusion about their distinct natures.

'Vírus' is a microscopic infectious agent that replicates inside living cells. 'Toxina' is a poisonous substance produced by an organism.

O *vírus* da gripe se espalhou rapidamente. (The flu *virus* spread quickly.) / A bactéria produziu uma *toxina* que causou a doença. (The bacteria produced a *toxin* that caused the disease.)